Class #5

• setup coveralls and add test for view, controller and logic
• setup basic authentication

Class #4

• add route /accounts/transaction
• more about ecto multi and defstruct

Class #3

• add routes /accounts/:id/deposit and /accounts/:id/withdraw
• action fallback and ecto multi

Class #2

• add route /users
• migration, schemas, changesets and bcrypt

Class #1

• add route /:filename
• pattern matching, pipe operator and test