Added scrollTo method to ListView

Summary: Closes https://github.com/facebook/react-native/pull/4781

Reviewed By: svcscm

Differential Revision: D2803479

Pulled By: mkonicek

fb-gh-sync-id: 7da41eb0bdfb0f90b4f81d1006eaf00446820827

Libraries/CustomComponents/ListView/ListView.js

@@ -236,6 +236,10 @@ var ListView = React.createClass({
       this.refs[SCROLLVIEW_REF].getScrollResponder();
   },
 
+  scrollTo: function(destY, destX) {
+    this.getScrollResponder().scrollResponderScrollTo(destX || 0, destY || 0);
+  },
+
   setNativeProps: function(props) {
     this.refs[SCROLLVIEW_REF].setNativeProps(props);
   },