Reverting loadBundle change to submit in a second PR

Author: lostintangent

CodePush.m

@@ -52,10 +52,16 @@ - (BOOL)isFailedHash:(NSString*)packageHash {
 
 - (void)loadBundle
 {
-    // Reset the runtime's bundle to be
-    // the latest URL, and then force a refresh
-    _bridge.bundleURL = [CodePush getBundleUrl];
-    [_bridge reload];
+    dispatch_async(dispatch_get_main_queue(), ^{
+        RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:[CodePush getBundleUrl]
+                                                            moduleName:[CodePushConfig getRootComponent]
+                                                     initialProperties:nil
+                                                         launchOptions:nil];
+        
+        UIViewController *rootViewController = [[UIViewController alloc] init];
+        rootViewController.view = rootView;
+        [UIApplication sharedApplication].delegate.window.rootViewController = rootViewController;
+    });
 }
 
 - (void)rollbackPackage