NSURL *jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];

[ReactNativeNavigation bootstrap:jsCodeLocation launchOptions:launchOptions];

RNCallKit *rncallkit = [[RNCallKit alloc] init];
RCTBridge *bridge = [[RCTBridge alloc] initWithBundleURL:jsCodeLocation
                                          moduleProvider:^{ return @[rncallkit]; }
                                           launchOptions:launchOptions];
RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
                                                 moduleName:@"MyApp"
                                          initialProperties:nil];