cleanup
Migrate to Android Studio
Holo theme applied
修改样式
精简资源
升级ZXing
准备合并
ready to merge

Signed-off-by: ChiChou <chichou@iceboy.org>
Merge branch 'codecolorist' of https://github.com/ChiChou/AndNerd into codecolorist
Merge pull request #3 from ChiChou/codecolorist

合并到master