Document recommended usage / examples for Android library

One item that should be explicitly specified is the recommendation to use [`Context.bindIsolatedService()`](https://developer.android.com/reference/android/content/Context#bindIsolatedService(android.content.Intent,%20int,%20java.lang.String,%20java.util.concurrent.Executor,%20android.content.ServiceConnection)) instead of `bindService()` so that patching for different processes is isolated.