code: function calculateTouchesDistance(startPoint, endPoint) {
  			var diffX = Math.abs(startPoint.x - endPoint.x);
  			var diffY = Math.abs(startPoint.y - endPoint.y);
  				
  			return Math.round(Math.sqrt(diffX*diffX+diffY*diffY));
  		}
docs: Calculate the distance between 2 touches (pinch)
  @param {point} startPoint A point object containing x and y co-ordinates
  @param {point} endPoint A point object containing x and y co-ordinates
  @return int;
  @inner