Update README.md

Signed-off-by: Hui-Hong You <hiroshi@ghostsinthelab.org>

Author: hiroshiyui

README.md

@@ -6,6 +6,12 @@ The libchewingAndroidAppModule is a byproduct of the [Guileless Bopomofo](https:
 
 libchewingAndroidAppModule 是[樸實注音鍵盤](https://github.com/hiroshiyui/GuilelessBopomofo)專案的副產品，將[新酷音函式庫](https://github.com/chewing/libchewing)打包為 Android App Module (AAR) 格式，透過模組化途徑方便開發與元件再利用。
 
+# Build 組建
+
+`./gradlew tasks -p libchewing-android-module bundleDebugAar bundleReleaseAar`
+
+The built AARs will be located at _libchewing-android-module/build/outputs/aar/_
+
 # Acknowledgements 感謝有您
 
 * [Chewing contributors](http://chewing.im/about.html)