Add omniauth-facebook gem:
Add first, last and username columns to users table.
Allow username param for devise controllers.
Add user sign up partial, display on homepage.
Add sign in link below sign up on home
Clean up Gemfile
Users can connect with Facebook.
Add Faker gem, use Faker is User factory.
Remove warnings from rspec, add bootstrap-sprockets to application.js
Rewrite application layout in HAML, add navbar.
Add show view for users.
Merge pull request #5 from Steveo1485/feature/user-sign-up

Feature/user sign up