Merge pull request #189 from marmelab/fix-sliders

Fix sliders delta initialization

lib/js/sliders.js

@@ -56,6 +56,8 @@
     startTime      = +new Date;
     pageX          = e.touches[0].pageX;
     pageY          = e.touches[0].pageY;
+	deltaX         = 0;
+	deltaY         = 0;
 
     setSlideNumber(0);