Fixed a bug that may not start on Android 5.0 or higher.
(It seems part of the "Google Play Licensing service" of the code did not correspond to the Android 5.0 or more)
The Android requirements, it was changed to "2.3.3 or more" "2.2 or more".
Set WaitTime, ExerciseTime, BreakTime, and run! It is simple interval timer!