Camera, CameraFollowable, Basic HUD for camera control
remove more ignored file that haven't been removed
Create README.md
Add central game resource object
BGM Control with crossfading
SFX with distance roll off tested and working fine (see CubeWithSound object in testscene)
Add HUD Controller
enhanced BGM control
Merge commit 'cc9cfb6a93f09b821ce70e05efab4cd506a4bcfe'

Conflicts:
	onyx/Assets/Logic/GameResources.cs