added user_controller_spec
added validations to user and restaurant models
user/restaurant models w/ validations; user and restaurant  model/controller_specs added
updated factories.rb for votes (added association)
added votes_controller_spec
added specs for restaurant,users, votes controller
added/ updated specs for restaurant and user model
added restaurant association to factory :item
Merge pull request #20 from fence-lizards-2014/rspec_v1

Rspec v1