code: function inMultiFingerRelease() {
  			
  			var withinThreshold = false;
  			
  			if(previousTouchEndTime) {	
  				var diff = getTimeStamp() - previousTouchEndTime	
  				if( diff<=options.fingerReleaseThreshold ) {
  					withinThreshold = true;
  				}
  			}
  			
  			return withinThreshold;	
  		}
docs: Checks if we are in the threshold between 2 fingers being released
  @return Boolean
  @inner