Adds Devise and Omniauth-Soundcloud gems
Updates Omniauth-FB gem by bundle update omniauth-facebook for gem compatibilities
Installs Devise and declares default_url_options in development environment
Adds devise to users
Adds secret key to devise configurations
Adds Users confirmable attributes and add index confirmation token to users.
Declares Users as commentable and omniauthable in migrations
Updates schema with updated devise-user migrations
Renames app_id and app_secret to facebook_app_id and facebook_secret_id, respectively
Adds devise views by generation
Declares Users as omniauthable and explicitly lists omniauth_providers
Removes current_user method--Devise includes, and redirect guests to appropriate path--as amended by devise
Removes unnecessary routes, as a result of Devise implementation