Merge pull request #44 from loup-brun/direction

Direction querying

README.md

@@ -87,8 +87,8 @@ Swipe can take an optional second parameter– an object of key/value settings:
 - **autoRestart** Boolean *(default: `false`)*: auto restart slideshow after user's touch event or next/prev calls.
 - **disableScroll** Boolean *(default: `false`)*: prevent any touch events on this container from scrolling the page.
 - **stopPropagation** Boolean *(default: `false`)*: stop event propagation.
-- **callback** Function *(default: `function() {}`)*: runs at slide change.
-- **transitionEnd** Function *(default: `function() {}`)*: runs at the end of a slide transition.
+- **callback** Function *(default: `function() {}`)*: runs at slide change. Three parameters are passed to the function: `index` (the current slide index), `elem` (the current slide element) and `dir` (direction: `1` for left or backward, `-1` for right or forward).
+- **transitionEnd** Function *(default: `function() {}`)*: runs at the end of a slide transition. Two parameters are passed to the function: `index` (the current slide index) and `elem` (the current slide element).
 
 ### Example
 
@@ -101,7 +101,7 @@ window.mySwipe = new Swipe(document.getElementById('slider'), {
   continuous: true,
   disableScroll: false,
   stopPropagation: false,
-  callback: function(index, elem) {},
+  callback: function(index, elem, dir) {},
   transitionEnd: function(index, elem) {}
 });
 ```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "swipejs",
-  "version": "2.1.5",
+  "version": "2.2.0",
   "main": "swipe.js",
   "description": "Swipe is the most accurate touch slider",
   "author": "Brad Birdsall",