added votes to models/vote_spec to test on
fixed typo in models/vote_spec
fixed typo in require. added count_upvotes test
scope for count_upvotes in model passes test
spec for count_downvotes
scope for count_downvotes. passes test
spec for vote_difference in model
class method for difference in up and down votes
Merge pull request #21 from armenvartan/armen-model-vote-spec

Armen model vote spec