Es6 refactoring + game architecture

[lmatiolis]

• Configure Babel on grunt
• Configure babel to run on specs
• Change all files to es6 classes and modules
• Change Engine to Game
• Change createjs stage access inside our class Stage.
• Create factories for Item, Background, Scene, etc
• Create separate module to access assets
• Start using class Item and remove methods from ObjectManager
• Organize it like MVC

Change Engine to Game

Game will be dealing with actions related to the game itself (save, pause, screen size, etc). It will have a GameFactory that will handle all objects creation through each individual factory. (SceneFactory, ItemFactory, etc).

Change createjs stage access inside our class Stage.

Just to remove horrible syntax stage.stage.

Start using class Item and remove methods from ObjectManager

Remove methods that are more related to the item (interactions with the item like objectClicked)