Added Cinch::Configuration::Authentication to store configuration in
Renamed the authentication strategies

:user_list is now known as :list, :user_login is now known as :login.
Added the :login strategy
Fixed a bug where no feedback was given if no authentication level has been configured
Fixed a security issue where authenticating and stealing a nickname wrongly marked a user as authorized
Load the UserList and UserLogin plugins by default
Updated and refactored the examples
Added a gemspec
Updated the README and added a license
Fixed typos in the help message for the UserLogin plugin