added swipe gesture to switch articles
added swipe gesture to switch articles

pixelgremlins/carntoonage,patrickcurl/carntoonage,patrickcurl/carntoonage,pejakm/Easy_xkcd,svetlemodry/Easy_xkcd,T-Rex96/Easy_xkcd,T-Rex96/Easy_xkcd,pixelgremlins/carntoonage,pejakm/Easy_xkcd,pejakm/Easy_xkcd,patrickcurl/carntoonage,svetlemodry/Easy_xkcd,pixelgremlins/carntoonage,T-Rex96/Easy_xkcd,svetlemodry/Easy_xkcd