added twits resource
tweet display meth
added validation, attr_accessible
added associations to user, twit
added twit create section
updated user index styles, added new Twit to user controller index
moved better_errors to dev
binding_o_caller gem
added mongoid:;timestamps
tinker with input styles
twit count added to user index
updated view
added Twit#create
changed user_id to Bson::objectID type
added style to index
user_helper#twit_pluralizer
Merge branches 'twits' and 'master'