Added a TODO, wrote test for users controller, made users identifiable by name instead of id.
Refactored Controller code with Rails 3 methods.
Added authentication with auth tokens (commented out) and updated specs to reflect this
Added respond_with refactoring to Ideas, Users.
Changed User-Idea relationship to be one to many, rather than many to many.
Merge pull request #35 from maxluzuriaga/master

User-Idea relationships, API token authentication, refactoring