Upgrade example app to react-native 0.40.0 (#638)

* Update sample to react-native@0.40

* Update compatibility with latest react-native

* Fixed Merge Issues with CodePushDemoApp.xcscheme

Examples/CodePushDemoApp/android/app/build.gradle

@@ -92,7 +92,7 @@ android {
         minSdkVersion 16
         targetSdkVersion 22
         versionCode 1
-        versionName "1.0.0"
+        versionName "1.0"
         ndk {
             abiFilters "armeabi-v7a", "x86"
         }

Examples/CodePushDemoApp/android/app/src/main/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.codepushdemoapp"
     android:versionCode="1"
-    android:versionName="1.0.0">
+    android:versionName="1.0">
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>

Examples/CodePushDemoApp/android/app/src/main/java/com/codepushdemoapp/MainApplication.java

@@ -39,7 +39,7 @@ public class MainApplication extends Application implements ReactApplication {
   public ReactNativeHost getReactNativeHost() {
     return mReactNativeHost;
   }
-  
+
   @Override
   public void onCreate() {
     super.onCreate();