title: Android app with webhook
body: <p>I'm trying to build an android app that uses a webhook to receive a notification and then trigger an action in the app.  My plan is to create the webhook with hook.io and setup Firebase to receive the notification (<a href="https://stackoverflow.com/questions/46336811/how-do-i-implement-a-webhook-in-android">How do I implement a webhook in Android?</a>). I'm new to Android and webhooks so I'm not sure if this method will work or if there is a better way to do it. I also found a Webhook API (<a href="https://developer.zendesk.com/embeddables/docs/android/handle_push_notifications_wh" rel="nofollow noreferrer">https://developer.zendesk.com/embeddables/docs/android/handle_push_notifications_wh</a>) and (<a href="https://github.com/predict-io/PredictIO-Android/wiki/Using-Webhooks" rel="nofollow noreferrer">https://github.com/predict-io/PredictIO-Android/wiki/Using-Webhooks</a>), but they both seem to only deal with sending notifications to a webhook, whereas I want to receive a notification. </p>