Create vote table
user can cast vote
allow user to change vote
create net_votes method
Merge branch 'master' into votes

Conflicts:
	app/models/review.rb
	db/schema.rb
	spec/models/review_spec.rb
refactor vote update action
create vote count methods for review class
refactor tests model tests using shoulda, make it so users can only edit and delete their own reviews
move sorting of reviews from movies controller into reviews controller because that makes more sense
Merge pull request #27 from LaunchAcademy/votes

RFR Votes
Resolved merge conflicts in destroy_review_spec and Movies show page
Resolve merge conflict in edit_review_spec