Add controller, routes and view for Sessions [8.1.1]
Add tests for valid and invalid signin [8.1.2]
Create view for signin [8.1.3]
Add test for persistent flash bug; Validate if user has valid signin credentials [8.1.5]
Prepare Users to store a remember_me session cookie [8.2.1]
Update User to generate and store the remember token [8.2.1]
Add sign_in method [8.2.3]
Add method to return current user [8.2.3]
Dinamically change header based on session [8.2.4]
Sign in user after sign up [8.2.5]
Add sign out functionality [8.2.6]
Update TODO [end 8]
Merge branch 'sign-in-out'