Hpを0以下にしない + ボール衝突時に相手の球を縮小
Merge branch 'mock/20131203' into feature/20131122

Conflicts:
	new_billiards/Assets/Script/Ball.cs
	new_billiards/Assets/Script/GameController.cs
	new_billiards/Library/ScriptAssemblies/Assembly-CSharp.dll
	new_billiards/Library/ScriptAssemblies/Assembly-CSharp.dll.mdb
	new_billiards/Library/assetDatabase3
	new_billiards/Library/metadata/11/11d1ee7ee4b234e1ba192c402a577a48
	new_billiards/Library/metadata/19/194d67783f51d4ac1afc4323cf2a5161
	new_billiards/Temp/__EditModeScene
	new_billiards/new_billiards-csharp.sln
	new_billiards/new_billiards.sln
Merge pull request #25 from t-hrhs/feature/20131122

特に問題ないはずなのでセルフマージ