devise

• Getting started with devise
• Devise & OmniAuth Multiple Providers
• Add and install the Devise gem
• Add Associations in authentication_provider.rb
• Add authentication_provider migration
• Add Gems in Gemfile for OmniAuth
• Add Model Concern omniauth_attributes_concern.rb
• Add route for users/omniauth_callbacks_controller.rb in routes.rb
• Add Social Media Account Keys in devise.rb
• Add the following code to user.rb
• Add the following code to user_authentication.rb
• Add user_authentication migration
• Create Controller Concern omni_concern.rb
• Create Controller users/omniauth_callbacks_controller.rb