set up create action for posts controller
added form errors to post form
setup edit and update actions for posts controller
moved post form to a partial and added edit view
added tag_search controller
added routes to tag search index action
added select2 gem
include select2 files in manifest files
added show action for tag search controller
set up select2 on tags field for posts
added custom css styling for select2 field
changed label on tags field
setup :tag_list virtual attribute setter method and added validation for post :title
fixed select2 ajax to send jsonp requests instead of json
removed background when select2 is active