LibGdxSampleクラスをFishcatchGameクラスに名前変更した。

	modified:   android/src/com/zarudama/fishcatch/android/AndroidLauncher.java
	renamed:    core/src/com/zarudama/fishcatch/LibGdxSample.java -> core/src/com/zarudama/fishcatch/FishcatchGame.java
	modified:   core/src/com/zarudama/fishcatch/GameScreen.java
	modified:   core/src/com/zarudama/fishcatch/MainMenuScreen.java
	modified:   core/src/com/zarudama/fishcatch/MyScreenAdapter.java
	modified:   desktop/src/com/zarudama/fishcatch/desktop/DesktopLauncher.java
	modified:   html/src/com/zarudama/fishcatch/client/HtmlLauncher.java
	modified:   ios/src/com/zarudama/fishcatch/IOSLauncher.java