Update README.md

Author: farmerbb

README.md

@@ -55,6 +55,7 @@ yarn install
 Invoke the actual build (debug build in such case):
 
 ```sh
+react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
 cd android && ./gradlew assembleDebug
 ```