Added many things.
- Added button images.
- Added HighscoreManager (partial)
- Highscore POJO
- ScoreDialog
- Background music
etc.
Merge branch 'develop' of https://github.com/LNSD002/SCBIO-OneButtonLarry

Conflicts solved:
	OneButtonLarry/AndroidManifest.xml
	OneButtonLarry/res/layout/activity_main.xml
	OneButtonLarry/src/org/scbio/onebuttonlarry/MainActivity.java