Reviews now tied to specific product
Add helper method for getting product average rating.
Merge branch 'master' into review2
Adjust review form format
Work on reviews validations issue.
Merge branch 'master' into review2
Add validation to prevent user/merchant to review their own product
Merge pull request #17 from ricarora/review2

Review2
Merge branch 'master' of github.com:ricarora/petsy into homelayout