Add Devise to the bundle
Configure Devise
Add User model
Add Devise to the User model
Users have usernames
Users have an authentication token
Validate presence and uniqueness of auth tokens
Users can register

POSTing to /users/sign_up allows clients to register.
Add byebug in development and test
Test registration through the API
Users can sign in via /users/sign_in
No need to initialize new users with a session
Refactor clunky API POSTs in tests
Code formatting adjustments in the controllers
Merge pull request #2 from kibunapp/bcobb/authentication

Registration/authentication