Add devise
Post bundle install for devise
Setup devise
Track devise files
Generate user model with devise
Post db migrate
Move homepage integration tests
Stub some tests
Test against duplicate keys
Ensure keys are unique
Test /register route
Change path for registration page to /register
Set up /login as route for login page
Test existing registration system
Sign up is a button and not a link
Test for button being called Register
Generate devise views
Change Sign Up to Register
Write test for current login scenario