ADD::guitar view
ADD::guitar interface and piano interface
ADD::guitar background
ADD::leap motion support for guitar & one hand suport & control pane hiden option
FIX::Background changed for instrument
Merge branch 'wangyujue/LeapBand' into keweihu/guitar_control
FIX::change guitar positions
Merge pull request #46 from hukewei/keweihu/guitar_control

Keweihu/guitar control
ADD::guitar sound support
Merge branch 'wangyujue/LeapBand' into zhangyixuan/leapband