Add "check-all" script

android/README.md

@@ -14,3 +14,13 @@ This folder contains the Android-platform-specific code for react-native-vision-
 It is recommended that you work on the code using the Example project (`example/android/`), since that always includes the React Native header files, plus you can easily test changes that way.
 
 You can however still edit the library project here by opening this folder with Android Studio.
+
+## Committing
+
+Before committing, make sure that you're not violating the Kotlin codestyles. To do that, run the following command:
+
+```bash
+yarn check-android
+```
+
+This will also try to automatically fix any errors by re-formatting the Kotlin code.