title: delegate method for CMMotionManager
body: <p>I just want to know that when we call the method of startGyroUpdates with CMMotionManager and fix some updateInterval say to 1.0/60.0 , then is there any delegate method that we have to implement where we can get the gyro updates. If not then where/how we can get the gyro-updates.</p>
  
  <p>Also if there is some useful code snippet to find out device change in position i-e if the device is moved up or down from some reference point.</p>