diff --git a/README.md b/README.md
index 5be8d0b..d76d93e 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,29 @@
 # LiveBattery
 
+![Android](https://img.shields.io/badge/platform-Android-brightgreen.svg)
+![Apache](https://img.shields.io/github/license/samelody/livebattery.svg)
+![API](https://img.shields.io/badge/API-15%2B-brightgreen.svg)
+[![Bintray](https://api.bintray.com/packages/belinwu/maven/livebattery/images/download.svg)](https://bintray.com/belinwu/maven/livebattery/_latestVersion)
+
 A LiveData for monitoring Android battery.
 
 **DO NOT USE THIS LIBRARY IN PRODUCTION UNTIL V1.0.0 IS RELEASED.**
 
-# Download
+# Installation
+
+Add the following dependency to your `build.gradle` file:
 
-Coming soon...
+```groovy
+dependencies {
+    implementation 'com.samelody.livebattery:livebattery:0.1.0'
+}
+```
 
-# Getting started
+# Usage
 
 In your Activity/Fragment/Service, create and observe a BatteryLiveData.
 
-## in Java
+## Java
 
 ```java
 liveBattery = new BatteryLiveData(this);
@@ -24,7 +35,7 @@ liveBattery.observe(this, new Observer<BatteryInfo>() {
 });
 ```
 
-## in Kotlin
+## Kotlin
 
 ```kotlin
 liveBattery = BatteryLiveData(this)
@@ -33,7 +44,9 @@ liveBattery.observe(this, Observer {
 })
 ```
 
-# BatteryInfo
+# Docs
+
+## BatteryInfo
 
 BatteryInfo is the data in a BatteryLiveData, it has following properties:
 
@@ -62,7 +75,11 @@ private int voltage;
 
 Get the remaining battery percent using `BatteryInfo#getPercent()` method.
 
-# Inspired by
+# Dependencies
+
+`androidx.lifecycle:lifecycle-livedata-core:2.0.0`
+
+# Thanks
 
 [RxBattery](https://github.com/pwittchen/RxBattery)
 
diff --git a/sample/build.gradle b/sample/build.gradle
index 33feb67..0b159b0 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -24,6 +24,7 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation deps.kotlin_stdlib
     implementation project(':library')
+//    implementation "com.samelody.livebattery:livebattery:0.1.0"
     implementation deps.appcompat
     implementation deps.constraintlayout
 
diff --git a/sample/src/main/java/com/samelody/samples/livebattery/MainActivity.kt b/sample/src/main/java/com/samelody/samples/livebattery/MainActivity.kt
index bb92190..68628b3 100644
--- a/sample/src/main/java/com/samelody/samples/livebattery/MainActivity.kt
+++ b/sample/src/main/java/com/samelody/samples/livebattery/MainActivity.kt
@@ -4,6 +4,7 @@ import android.os.*
 import androidx.appcompat.app.*
 import androidx.lifecycle.*
 import com.samelody.livebattery.*
+import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : AppCompatActivity() {
 
@@ -15,7 +16,7 @@ class MainActivity : AppCompatActivity() {
 
         liveBattery = BatteryLiveData(this)
         liveBattery.observe(this, Observer {
-            println(it)
+            info.text = it.toString()
         })
     }
 }
diff --git a/sample/src/main/res/layout/activity_main.xml b/sample/src/main/res/layout/activity_main.xml
index b093aa0..16a37c4 100644
--- a/sample/src/main/res/layout/activity_main.xml
+++ b/sample/src/main/res/layout/activity_main.xml
@@ -8,6 +8,7 @@
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/info"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Hello World!"