Add devise
Generate Devise
Add devise alert and notice flash msg
Add root path
Add devise model, routes and migration
Add oauth-facebook
Add oauth-facebook
Add a new column provider uid to user
declare provider into devise initializer
Add devise.rb to avoid problems with facebook keys
Add devise.rb to avoid problems with facebook keys
Add strategy to devise with oauth and facebook
Add an index page
Add header partial
Add header partial into layout file
Create facebook callback route
Add a controller to handle the facebook callback
Add from oauth to get facebook user info
Add Columns image and name to the users table
Add logout with delete method