--amend

Author: zardra

heroku/README.md

@@ -13,5 +13,6 @@ In order to use this sample app, you must have a [Facebook Developer](https://de
     [![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy?template=https://github.com/fbsamples/graph-api-webhooks-samples)
 
 ### Instagram Subscription API
+
 1. Register an [Instagram API client](https://instagram.com/developer/clients/manage/).
 1. Set up your client's [subscription](https://www.instagram.com/developer/subscriptions/) using your `https://<your-subdomain>.herokuapp.com/instagram` as the callback URL. It is recommended that you set a `TOKEN` [config var](https://devcenter.heroku.com/articles/config-vars) as part of the set up of your Heroku app to secure requests. If you choose not to set a config var, then you will need to set a verify token of 'token' when configuring the callback URL.