diff --git a/README.md b/README.md
index e24ef24..f04c2e9 100644
--- a/README.md
+++ b/README.md
@@ -45,16 +45,28 @@ dependencies {
 ```java
 import com.rnfs.RNFSPackage;  // <--- import
 
-public class MainActivity extends ReactActivity {
+public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
 
   ......
 
   @Override
-  protected List<ReactPackage> getPackages() {
-    return Arrays.<ReactPackage>asList(
-      new MainReactPackage(),
-      new RNFSPackage // <-- add package
-    )
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    mReactRootView = new ReactRootView(this);
+
+    mReactInstanceManager = ReactInstanceManager.builder()
+      .setApplication(getApplication())
+      .setBundleAssetName("index.android.bundle")
+      .setJSMainModuleName("index.android")
+      .addPackage(new MainReactPackage())
+      .addPackage(new RNFSPackage())      // <------- add package
+      .setUseDeveloperSupport(BuildConfig.DEBUG)
+      .setInitialLifecycleState(LifecycleState.RESUMED)
+      .build();
+
+    mReactRootView.startReactApplication(mReactInstanceManager, "ExampleRN", null);
+
+    setContentView(mReactRootView);
   }
 
   ......