code: function validateSwipeDistance() {
  			var valid = true;
  			//If we made it past the min swipe distance..
  			if (options.threshold !== null) {
  				valid = distance >= options.threshold;
  			}
  			
              return valid;
  		}
docs: GESTURE VALIDATION  
  Checks the user has swipe far enough
  @return Boolean if <code>threshold</code> has been set, return true if the threshold was met, else false.
  If no threshold was set, then we return true.
  @inner