[ReactNative] Fix sample apps

Examples/SampleApp/iOS/SampleApp/AppDelegate.m

@@ -47,6 +47,7 @@
 
   RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
                                                       moduleName:@"SampleApp"
+                                               initialProperties:nil
                                                    launchOptions:launchOptions];
 
   self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];