add Player Class
Merge branch 'master' of https://github.com/Wu-Hao/TankMultiplayer
Change GameScene.
Merge branch 'master' of https://github.com/Wu-Hao/TankMultiplayer

Conflicts:
	Classes/GameScene.cpp
Merge pull request #2 from fusijie/master

Merge branch 'master' of https://github.com/Wu-Hao/TankMultiplayer