Fixes zillow#76 - console warning regarding setting a property on the pooled synthetic event object

Author: adams

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-slider",
-  "version": "0.6.2",
+  "version": "0.6.3",
   "description": "Slider component for React",
   "main": "react-slider.js",
   "keywords": [
@@ -20,7 +20,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/mpowaga/react-slider.git"
+    "url": "https://github.com/adamshone/react-slider.git"
   },
   "peerDependencies": {
     "react": ">=15.0.0"

react-slider.js

@@ -15,14 +15,14 @@
   function pauseEvent(e) {
     if (e.stopPropagation) e.stopPropagation();
     if (e.preventDefault) e.preventDefault();
-    e.cancelBubble = true;
-    e.returnValue = false;
+    e.nativeEvent.cancelBubble = true;
+    e.nativeEvent.returnValue = false;
     return false;
   }
 
   function stopPropagation(e) {
     if (e.stopPropagation) e.stopPropagation();
-    e.cancelBubble = true;
+    e.nativeEvent.cancelBubble = true;
   }
 
   /**