Minor changes
Add omniauth github gem
Add oauth_token and oauth_expires_at rows migrate them delete rows uid and provider and then add them again under different migration. Add provider to devise.rb. Add ominauthable to user.rb
Add github method to omniauthcallbacks controller, add from_omni auth method to user.rb file. Add new session method to user.rb
Fix bug in from omni method
Working version of authentication with github, not saving session for user and not logging in.
General adjustments