* move some code on game delegates
* moved setupHud and setupWorld code to game delegates
* add a different font family to each game
* move many methods to game delegates
* started customizing some rpg game features
* add 3 atlas folders
* add player1-256x256.png sprite for rpg.atlas

FIXME: FPS on simulator is too slow (<30 fps)
* move more methods from SktSceneGame to SktGame
* move methods from SkySceneGame to SktGame or SktGameShoot, SktGameRpg, SktGameGravity