onTouchEnd() makes a transition to next page only if  following condition becomes true : 
"if (Math.abs(deltaX + distanceToTravel) > swipeThreshold) "

We also fixed swipeThreshold to windowWidth * options.swipeThreshold and options.swipeThreshold is set 0.4 .  swipeThreshold becomes essentially 40% of windowwidth.

I think that i should set a better judgement like 

onTouchEnd((deltaX > 0) ? windowWidth * options.swipeThreshold :
                                       -windowWidth * options.swipeThreshold, evt); 

Goal is to force a page transition by calling ontouchend with bigger values.