Created message window scene.
Applied scaling GameView.
Finish making MessageWindowScene prototype.
Delete unnecessary debug codes.
Delete unnecessary debug codes.
Delete unnecessary debug codes.
Added bitmap recycle code in dispose function.
Created Sound class prototype.
Added sample sound files.
Deleted debugging code.
Branched from the master.
Added title background.
Added scene change (maybe) button.
Added exit (maybe) button.
Added title background.
Merge branches 'feature-title' and 'master' of https://github.com/fujitaya/Zunko

Conflicts:
	app/src/main/java/jp/fujitaya/zunko/util/GameView.java