Updates from Sat 14 Mar

- Unforked RKWebView | Nick Lockwood
- [ReactNative] Add integration test stuff | Spencer Ahrens
- [ReactNative] AlertIOS.alert and examples | Eric Vicenti
- [react-packager] Implement image loading i.e. ix('img') -> require('image!img'); | Amjad Masad
- Fixed scrollOffset bug | Nick Lockwood
- [React Native] Update 2048 | Alex Akers
- deepDiffer should support explicitly undefined values | Thomas Aylott

Libraries/Utilities/differ/deepDiffer.js

@@ -38,7 +38,7 @@ var deepDiffer = function(one: any, two: any): bool {
   for (var twoKey in two) {
     // The only case we haven't checked yet is keys that are in two but aren't
     // in one, which means they are different.
-    if (one[twoKey] === undefined) {
+    if (one[twoKey] === undefined && two[twoKey] !== undefined) {
       return true;
     }
   }