This change removes the twitter authentication feature from the application.
It removes the `omniauth-twitter` gem and all related code from controllers, views, and tests. It also removes the twitter icon and environment variable settings.
* FactoryGirl Changed to FactoryBot
file fix
changes based on comments received
Bundle Update on 2017-10-29
style update to align hash literal
added package-lock
* indentation fixes with rubocop
* name added to contributors