FWR connection: vibrate or beep on connect

- Add SoundUtils class and vibrateOrBeepBeep
  Method which causes iPhone to vibrate or
  beep-beep.caf to be played on other devices
  that don't support vibration

- call vibrateOrBeepBeep on accessory connected
Merge pull request #100 from fightingwalrus/igcs-187-vibrate-on-fwr-connect

FWR connection: vibrate or beep on accessory connect