Graph API Webhooks Heroku Sample

This is a sample client for Facebook's Graph API Webhooks and Instagram's Subscriptions API, powered by Node.js on Heroku.

1. Deploy with this button:
2. Test your deployment with curl https://<your-subdomain>.herokuapp.com - you should see "It works!".
3. For handling POST request validation (optional, but suggested), set the APP_SECRET config var using your app secret value from your Facebook app's settings.

1. Create a new Facebook application.
2. Set up your Facebook application's Graph API Webhooks subscription using https://<your-subdomain>.herokuapp.com/facebook as the callback URL and token as the verify_token.

1. Register an Instagram API client.
2. Set up your client's subscription using your https://<your-subdomain>.herokuapp.com/instagram as the callback URL and token as the verify_token.