Android 5.0 API 2.1
Merge pull request #252 from Shusshu/api21

Android 5.0 API 2.1
Use sdk platform 21 instead of 19 so appcompat runs

Without this, the new Android Compatibility Extra V7 AppCompat Library will fail to install.
Merge pull request #254 from rtack/patch-1

Use sdk platform 21 instead of 19 so appcompat runs