unit tests for votes
added votes table
created votes model and polymorphic associations
added vote_count column to posts and comments
refactored questions show page to render comment partials
feature tests for votes
added create resource for votes
fixed typo, question should be post
implemented vote partial with a link from the post show page
wrote controller tests for votes#create
Implemented votes#create

  *created votable module and included it in comment and post
  *made vote attributes accessible
wrote feature tests for voting on posts
wrote a controller test for rendering json
added some html selectors in views
controller renders json for votes#create
wrote event handlers for votes
renamed event handler in comments.js
implemented votes event handler
wrote feature test for voting on comments
implemented view for voting on comments