Write category tests
Write tests for category mailer
Write tests for api mailer
Define factories as sequences
Write passing tests for categories controller
Write tests for api controller
Outline tests for reviews controller
Add user authentication before new and create actions
Create already_voted_on? method in user model and delete from vote controller
Write factory tests for user show and index page
Outline tests for votes controller
Outline tests for charges controller
Write tests for user controller
Add factory for payment tests
Write tests for already_voted_on? method in user model