Added omniauth
Added model user
Added omniauth initializer
Added omniauth in gitignore
Added omniauth in gitignore
Added omniauth in gitignore
Added sessions controller
Added method in the User model that saves a new user to the datastore
Added helper methods to distinguish anonymous visitors from users who are logged in
Added oauth routes
Removing redirect to root
Fix redirect
Add dotenv
Test simple login
Merge pull request #24 from coopera/login-with-github

Login with github