Fix range min handle on mobile

bower.json

 {
   "name": "angularjs-slider",
-  "version": "0.1.12",
+  "version": "0.1.13",
   "homepage": "https://github.com/rzajac/angularjs-slider",
   "authors": [
     "Rafal Zajac <rzajac@gmail.com>",

package.json

 {
   "name": "jusas-angularjs-slider",
-  "version": "0.1.12",
+  "version": "0.1.13",
   "description": "AngularJS slider directive with no external dependencies. Mobile friendly!.",
   "main": "rzslider.js",
   "repository": {

rzslider.js

@@ -4,7 +4,7 @@
  * (c) Rafal Zajac <rzajac@gmail.com>
  * http://github.com/rzajac/angularjs-slider
  *
- * Version: v0.1.12
+ * Version: v0.1.13
  *
  * Licensed under the MIT license
  */
@@ -812,7 +812,7 @@ function throttle(func, wait, options) {
       this.minH.on('mousedown', angular.bind(this, this.onStart, this.minH, 'rzSliderModel'));
       if(this.range) { this.maxH.on('mousedown', angular.bind(this, this.onStart, this.maxH, 'rzSliderHigh')) }
 
-      this.minH.on('touchstart.rzslider', angular.bind(this, this.onStart, this.minH, 'rzSliderModel'));
+      this.minH.on('touchstart', angular.bind(this, this.onStart, this.minH, 'rzSliderModel'));
       if(this.range) { this.maxH.on('touchstart', angular.bind(this, this.onStart, this.maxH, 'rzSliderHigh')) }
     },