[SimlarService] when getting called, now starts playing ringtone before starting to vibrate

  * As ringtone loading takes a while it makes sence to do this first.
[VibratorManager] renamed VibratorThread -> VibratorManager
[VibratorManager] now works in main thread
Merge pull request #67 from simlar/vibrator-in-main-thread-pullrequest

Vibrator moved to main thread