Added sign up feature
Implemented sign up feature
Created first failing sign in test
Added /signin route
Added sorcery to Gemfile
Created SessionsController and new session view
Created sign in form
Set SessionsController to use Sorcery's login method
Set sorcery and User model to work together
Added flash messages to layout and set a flash for successful sign in
Configured sorcery to the valid sign in scenario to pass
Uncommented and implemented the failed sign in scenario