Created a Custom AccessControlFilter to handle authentication
Modified APIController so it handles Authentication via XAuthTokens better
Modified the Dashboard Category controller to better handle permissions
API now returns when parameters are included
Category now responds to GET to [/category/<id>]
Updating CiiModel to support the API
Category GET, POST, and DELETE is now implemented
CiiModel changes for creation
Updating README for categories
Updating User API endpoint
Updating User API documentation and adding API Token generation to the User API endpoint