add votes_controller
add functions for votes with polymorphic voting
add Vote#create method
add to user model already_voted_this? method
add vote resource (and also change spelling of voteable to votable, for consistency)
Merge branch 'master' of https://github.com/eddiekimosabe/edhacks into votes_and_voting
fix issues with vote/user models/associations so that voting properly works now.
Merge pull request #11 from alanflorendo/votes_and_voting

Votes and voting