Updated Android/ios parts for DemoApp with RN0.47.1 (#946)

Examples/CodePushDemoApp/android/app/build.gradle

@@ -33,6 +33,13 @@ import com.android.build.OutputFile
  *   // bundleInPaidRelease: true,
  *   // bundleInBeta: true,
  *
+ *   // whether to disable dev mode in custom build variants (by default only disabled in release)
+ *   // for example: to disable dev mode in the staging build type (if configured)
+ *   devDisabledInStaging: true,
+ *   // The configuration property can be in the following formats
+ *   //         'devDisabledIn${productFlavor}${buildType}'
+ *   //         'devDisabledIn${buildType}'
+ *
  *   // the root of your project, i.e. where "package.json" lives
  *   root: "../../",
  *
@@ -58,7 +65,7 @@ import com.android.build.OutputFile
  *   inputExcludes: ["android/**", "ios/**"],
  *
  *   // override which node gets called and with what additional arguments
- *   nodeExecutableAndArgs: ["node"]
+ *   nodeExecutableAndArgs: ["node"],
  *
  *   // supply additional arguments to the packager
  *   extraPackagerArgs: []