Add simplecov gem to track rspec test coverage
Add simplecov to spec_helper
Add methods to simulate user login with devise in rspec
Add review factory to factories.rb
Write tests for already_voted_on? method in user model
Write tests for apis controller
Write tests for categories controller
Write tests for reviews controller
Write tests for api model
Edit tests for category mailer
Edit tests for api mailer
Write tests for gravatar in users helper
Write tests for votes controller
Write tests for user controller