* Add Authentication providers
* Making strides on refactoring
* New usr from Twitter
* Existing Twitter user
* Existing user Github
* Test skip_confirmation!
* Refactor a bit and add simplecov groups
* Test user already logged in
* Rename to Authentication::Authenticator
* Refactor to a common class
* Add existing user test for twitter login
* Refactor global handler
* Fix spec and comment Twitter provider
* Update comments and strategy TODO
* Move providers loading code to Authentication::Providers
* add SubclassResponsibility error
* Use delegation
