Merge pull request #21 from raymondlam/master

Added ability to disable vibration for TimePicker.
reset listener in sample app
clean, aar, apk
empty constructors
Delete build.gradle
gradle configuration cleaning, prepare for maven release
prepare maven central push
Added setMinutesInterval for Time Picker Dialog to set the minimum selectable increment for minutes.
Merge branch 'feature/add_minute_intervals'