added comments controller, needs to be finished
Merge pull request #9 from mule-deer-2014/search_and_user_controller

Search and user controller
Merge remote-tracking branch 'origin' into comments_controller_yohan
created index and create actions for ccomments controller
Merge pull request #10 from mule-deer-2014/comments_controller_yohan

Comments controller yohan
Merge remote-tracking branch 'origin' into users_controller