Merge pull request #893 from sdesapio/dev

Replaced xOffset and yOffset -> fallbackOffset: {x: 0, y: 0}

Sortable.js

@@ -255,7 +255,8 @@
 			forceFallback: false,
 			fallbackClass: 'sortable-fallback',
 			fallbackOnBody: false,
-			fallbackTolerance: 0
+			fallbackTolerance: 0,
+			fallbackOffset: {x: 0, y: 0}
 		};
 
 
@@ -524,9 +525,10 @@
 			if (tapEvt) {
 				var	options = this.options,
 					fallbackTolerance = options.fallbackTolerance,
+					fallbackOffset = options.fallbackOffset,
 					touch = evt.touches ? evt.touches[0] : evt,
-					dx = touch.clientX - tapEvt.clientX,
-					dy = touch.clientY - tapEvt.clientY,
+					dx = (touch.clientX - tapEvt.clientX) + fallbackOffset.x,
+					dy = (touch.clientY - tapEvt.clientY) + fallbackOffset.y,
 					translate3d = evt.touches ? 'translate3d(' + dx + 'px,' + dy + 'px,0)' : 'translate(' + dx + 'px,' + dy + 'px)';
 
 				// only set the status to dragging, when we are actually dragging