diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..9ae4198
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+export AWS_ACCESS_KEY_ID := foo
+export AWS_SECRET_ACCESS_KEY := bar
+export AWS_CSM_ENABLED := false
+export AWS_REGION := current
+export AWS_BUCKET := default
+
+tests:
+	bin/phpunit
+	bin/phpspec run
diff --git a/Readme.md b/Readme.md
index e3143be..c398b97 100644
--- a/Readme.md
+++ b/Readme.md
@@ -187,5 +187,5 @@ __*Note:*__ Use stream functions for big files.
 * Fork the repo.
 * Fix an issue or add a new adapter or improve something or whatever you want.
 * Follow the PSR-2 style.
-* Run the tests. (add more tests if is needed).
+* Run `make tests`. (add more tests if is needed).
 * Make a pull request.
diff --git a/composer.json b/composer.json
index 0b9ff86..6ace707 100644
--- a/composer.json
+++ b/composer.json
@@ -4,14 +4,14 @@
   "type": "lib",
   "require": {
     "psr/log": "^1.0",
-    "ralouphie/mimey": "^1.0"
+    "ralouphie/mimey": "^1.0",
+    "aws/aws-sdk-php": "3.19.3"
   },
   "require-dev": {
     "phpspec/phpspec": "^2.5",
     "phpunit/phpunit": "4.8.*",
     "squizlabs/php_codesniffer": "2.*",
-    "henrikbjorn/phpspec-code-coverage": "2.*",
-    "aws/aws-sdk-php": "^3.0.0"
+    "henrikbjorn/phpspec-code-coverage": "2.*"
   },
   "license": "MIT",
   "config": {
diff --git a/composer.lock b/composer.lock
index 919e868..8b4e1ba 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,91 +1,11 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "ddab848aebc629a0bb0ec54fc06a4bf5",
+    "content-hash": "27f101abac5e389e5dcc261744791e7c",
     "packages": [
-        {
-            "name": "psr/log",
-            "version": "1.0.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/php-fig/log.git",
-                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/fe0936ee26643249e916849d48e3a51d5f5e278b",
-                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b",
-                "shasum": ""
-            },
-            "type": "library",
-            "autoload": {
-                "psr-0": {
-                    "Psr\\Log\\": ""
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
-                }
-            ],
-            "description": "Common interface for logging libraries",
-            "keywords": [
-                "log",
-                "psr",
-                "psr-3"
-            ],
-            "time": "2012-12-21T11:40:51+00:00"
-        },
-        {
-            "name": "ralouphie/mimey",
-            "version": "1.0.8",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/ralouphie/mimey.git",
-                "reference": "d69688d4856daa13a9124c819d148ccc2235dea2"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/ralouphie/mimey/zipball/d69688d4856daa13a9124c819d148ccc2235dea2",
-                "reference": "d69688d4856daa13a9124c819d148ccc2235dea2",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^5.3|^7.0"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "~3.7.0",
-                "satooshi/php-coveralls": ">=1.0"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Mimey\\": "src/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Ralph Khattar",
-                    "email": "ralph.khattar@gmail.com"
-                }
-            ],
-            "description": "PHP package for converting file extensions to MIME types and vice versa.",
-            "time": "2017-01-27T20:57:22+00:00"
-        }
-    ],
-    "packages-dev": [
         {
             "name": "aws/aws-sdk-php",
             "version": "3.19.3",
@@ -166,72 +86,18 @@
             ],
             "time": "2016-08-30T17:56:50+00:00"
         },
-        {
-            "name": "doctrine/instantiator",
-            "version": "1.0.5",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/8e884e78f9f0eb1329e445619e04456e64d8051d",
-                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3,<8.0-DEV"
-            },
-            "require-dev": {
-                "athletic/athletic": "~0.1.8",
-                "ext-pdo": "*",
-                "ext-phar": "*",
-                "phpunit/phpunit": "~4.0",
-                "squizlabs/php_codesniffer": "~2.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Marco Pivetta",
-                    "email": "ocramius@gmail.com",
-                    "homepage": "http://ocramius.github.com/"
-                }
-            ],
-            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
-            "homepage": "https://github.com/doctrine/instantiator",
-            "keywords": [
-                "constructor",
-                "instantiate"
-            ],
-            "time": "2015-06-14T21:17:01+00:00"
-        },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "6.2.1",
+            "version": "6.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "3f808fba627f2c5b69e2501217bf31af349c1427"
+                "reference": "ebf29dee597f02f09f4d5bbecc68230ea9b08f60"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/3f808fba627f2c5b69e2501217bf31af349c1427",
-                "reference": "3f808fba627f2c5b69e2501217bf31af349c1427",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/ebf29dee597f02f09f4d5bbecc68230ea9b08f60",
+                "reference": "ebf29dee597f02f09f4d5bbecc68230ea9b08f60",
                 "shasum": ""
             },
             "require": {
@@ -280,32 +146,32 @@
                 "rest",
                 "web service"
             ],
-            "time": "2016-07-15T17:22:37+00:00"
+            "time": "2016-10-08T15:01:37+00:00"
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "1.2.0",
+            "version": "v1.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "c10d860e2a9595f8883527fa0021c7da9e65f579"
+                "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/c10d860e2a9595f8883527fa0021c7da9e65f579",
-                "reference": "c10d860e2a9595f8883527fa0021c7da9e65f579",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/a59da6cf61d80060647ff4d3eb2c03a2bc694646",
+                "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.5.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.0"
+                "phpunit/phpunit": "^4.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0-dev"
+                    "dev-master": "1.4-dev"
                 }
             },
             "autoload": {
@@ -331,7 +197,7 @@
             "keywords": [
                 "promise"
             ],
-            "time": "2016-05-18T16:56:05+00:00"
+            "time": "2016-12-20T10:07:11+00:00"
         },
         {
             "name": "guzzlehttp/psr7",
@@ -392,84 +258,224 @@
             "time": "2016-06-24T23:00:38+00:00"
         },
         {
-            "name": "henrikbjorn/phpspec-code-coverage",
-            "version": "2.1.0",
+            "name": "mtdowling/jmespath.php",
+            "version": "2.4.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/henrikbjorn/PhpSpecCodeCoverageExtension.git",
-                "reference": "528a0c69a524f8acba5f66bc59ae8dc9bc409045"
+                "url": "https://github.com/jmespath/jmespath.php.git",
+                "reference": "adcc9531682cf87dfda21e1fd5d0e7a41d292fac"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/henrikbjorn/PhpSpecCodeCoverageExtension/zipball/528a0c69a524f8acba5f66bc59ae8dc9bc409045",
-                "reference": "528a0c69a524f8acba5f66bc59ae8dc9bc409045",
+                "url": "https://api.github.com/repos/jmespath/jmespath.php/zipball/adcc9531682cf87dfda21e1fd5d0e7a41d292fac",
+                "reference": "adcc9531682cf87dfda21e1fd5d0e7a41d292fac",
                 "shasum": ""
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-                "php": "^5.3.3|^5.4|^5.5|^5.6|^7.0",
-                "phpspec/phpspec": "^2.0",
-                "phpunit/php-code-coverage": "^2.2.4|^3"
+                "php": ">=5.4.0"
             },
             "require-dev": {
-                "bossa/phpspec2-expect": "^1.0"
+                "phpunit/phpunit": "~4.0"
             },
-            "suggest": {
-                "ext-xdebug": "To allow coverage generation when not using a recent version of phpdbg"
+            "bin": [
+                "bin/jp.php"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "JmesPath\\": "src/"
+                },
+                "files": [
+                    "src/JmesPath.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                }
+            ],
+            "description": "Declaratively specify how to extract elements from a JSON document",
+            "keywords": [
+                "json",
+                "jsonpath"
+            ],
+            "time": "2016-12-03T22:08:25+00:00"
+        },
+        {
+            "name": "psr/http-message",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message.git",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "shasum": ""
+            },
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+                "php": ">=5.3.0"
             },
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             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "1.0.x-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "PhpSpec\\Extension\\": "src/"
+                    "Psr\\Http\\Message\\": "src/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
-            "description": "Integrates CodeCoverage with PhpSpec",
-            "time": "2016-05-05T18:25:12+00:00"
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP messages",
+            "homepage": "https://github.com/php-fig/http-message",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "time": "2016-08-06T14:39:51+00:00"
         },
         {
-            "name": "mtdowling/jmespath.php",
-            "version": "2.3.0",
+            "name": "psr/log",
+            "version": "1.0.0",
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-                "url": "https://github.com/jmespath/jmespath.php.git",
-                "reference": "192f93e43c2c97acde7694993ab171b3de284093"
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b"
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-                "reference": "192f93e43c2c97acde7694993ab171b3de284093",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/fe0936ee26643249e916849d48e3a51d5f5e278b",
+                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b",
+                "shasum": ""
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Psr\\Log\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "time": "2012-12-21T11:40:51+00:00"
+        },
+        {
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+            "version": "1.0.8",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ralouphie/mimey.git",
+                "reference": "d69688d4856daa13a9124c819d148ccc2235dea2"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ralouphie/mimey/zipball/d69688d4856daa13a9124c819d148ccc2235dea2",
+                "reference": "d69688d4856daa13a9124c819d148ccc2235dea2",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4.0"
+                "php": "^5.3|^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.0"
+                "phpunit/phpunit": "~3.7.0",
+                "satooshi/php-coveralls": ">=1.0"
             },
-            "bin": [
-                "bin/jp.php"
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Mimey\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
             ],
+            "authors": [
+                {
+                    "name": "Ralph Khattar",
+                    "email": "ralph.khattar@gmail.com"
+                }
+            ],
+            "description": "PHP package for converting file extensions to MIME types and vice versa.",
+            "time": "2017-01-27T20:57:22+00:00"
+        }
+    ],
+    "packages-dev": [
+        {
+            "name": "doctrine/instantiator",
+            "version": "1.0.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/instantiator.git",
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3,<8.0-DEV"
+            },
+            "require-dev": {
+                "athletic/athletic": "~0.1.8",
+                "ext-pdo": "*",
+                "ext-phar": "*",
+                "phpunit/phpunit": "~4.0",
+                "squizlabs/php_codesniffer": "~2.0"
+            },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0-dev"
+                    "dev-master": "1.0.x-dev"
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             "autoload": {
                 "psr-4": {
-                    "JmesPath\\": "src/"
-                },
-                "files": [
-                    "src/JmesPath.php"
-                ]
+                    "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
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@@ -477,17 +483,62 @@
             ],
             "authors": [
                 {
-                    "name": "Michael Dowling",
-                    "email": "mtdowling@gmail.com",
-                    "homepage": "https://github.com/mtdowling"
+                    "name": "Marco Pivetta",
+                    "email": "ocramius@gmail.com",
+                    "homepage": "http://ocramius.github.com/"
                 }
             ],
-            "description": "Declaratively specify how to extract elements from a JSON document",
+            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
+            "homepage": "https://github.com/doctrine/instantiator",
             "keywords": [
-                "json",
-                "jsonpath"
+                "constructor",
+                "instantiate"
+            ],
+            "time": "2015-06-14T21:17:01+00:00"
+        },
+        {
+            "name": "henrikbjorn/phpspec-code-coverage",
+            "version": "2.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/henrikbjorn/PhpSpecCodeCoverageExtension.git",
+                "reference": "528a0c69a524f8acba5f66bc59ae8dc9bc409045"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/henrikbjorn/PhpSpecCodeCoverageExtension/zipball/528a0c69a524f8acba5f66bc59ae8dc9bc409045",
+                "reference": "528a0c69a524f8acba5f66bc59ae8dc9bc409045",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.3|^5.4|^5.5|^5.6|^7.0",
+                "phpspec/phpspec": "^2.0",
+                "phpunit/php-code-coverage": "^2.2.4|^3"
+            },
+            "require-dev": {
+                "bossa/phpspec2-expect": "^1.0"
+            },
+            "suggest": {
+                "ext-xdebug": "To allow coverage generation when not using a recent version of phpdbg"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PhpSpec\\Extension\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
             ],
-            "time": "2016-01-05T18:25:05+00:00"
+            "description": "Integrates CodeCoverage with PhpSpec",
+            "abandoned": true,
+            "time": "2016-05-05T18:25:12+00:00"
         },
         {
             "name": "phpdocumentor/reflection-common",
@@ -662,8 +713,7 @@
             "authors": [
                 {
                     "name": "Chris Boulton",
-                    "homepage": "http://github.com/chrisboulton",
-                    "role": "Original developer"
+                    "homepage": "http://github.com/chrisboulton"
                 }
             ],
             "description": "A comprehensive library for generating differences between two hashable objects (strings or arrays).",
@@ -1178,58 +1228,9 @@
                 "mock",
                 "xunit"
             ],
+            "abandoned": true,
             "time": "2015-10-02T06:51:40+00:00"
         },
-        {
-            "name": "psr/http-message",
-            "version": "1.0.1",
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