Updated GameModel and GameController functions to account for NULL value
Update to doctrine 2.4.*
Updated GameController remove function documentation
Added EventModel with getters and setters
Updated model functions and comments
Updated controller function and documentation
Fixed EventModel NULL code for constructor
Added controller and model function with routing
Updated models and controllers with one-to-many bidirectional
relationship between event and game
Updated models and controllers with one-to-many bidirectional
relationship between game and achievement