New background!
Merge branch 'master' of https://github.com/DarronXu/cardboard.git

Conflicts:
	bin/Cardboard.apk
	bin/classes.dex
	bin/pi-a.apk
	bin/resources.ap_
	gen/com/IYYX/cardboard/R.java
	src/com/IYYX/cardboard/CardboardRenderer.java