Add RSpec
Install Devise
Generate User model with Devise
Generate Users controller
Add User Index to the routes file
Add Home controller and index view, User index view, and link to sign up
Remove test/ folder and add preliminary tests
Add letter opener gem
Add some style
Switch to Bootstrap because Foundation forms are UGLY
Add ruby version to Gemfile
Configure Procfile for Heroku
Remove production from database.yml
Add Users index page with paginated users and Gravatars
Merge branch 'feature/1-create-user-model' into develop