New release including OnMove improvement

Author: David-Desmaisons

README.md

@@ -110,11 +110,13 @@ function onMoveCallback(evt, originalEvent){
     // return false; — for cancel
 }
 ```
-evt object has same property as [Sortable onMove event](https://github.com/RubaXa/Sortable#move-event-object), plus two additional properties:
+evt object has same property as [Sortable onMove event](https://github.com/RubaXa/Sortable#move-event-object), and 3 additional properties:
  - `draggedContext`:  context linked to dragged element
  	- `index`: dragged element index
 	- `element`: dragged element underlying view model element
- - `relatedContext`: context linked to current drag position
+ - `futureIndex`:  Number. 
+    Potencial index of the dragged element if the drop operation is accepted.
+ - `relatedContext`: context linked to current drag operation
  	- `index`: target element index
 	- `element`: target element view model element
 	- `list`: target list

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vuedraggable",
-  "version": "2.7.0-rc0",
+  "version": "2.8.0-rc0",
   "description": "draggable component for vue",
   "main": "dist/vuedraggable.js",
   "files": [