<?php

const APP_SECRET = '';
const PAGE_ACCESS_TOKEN = '';
const VALIDATION_TOKEN = '';
const SERVER_URL = '';

<?php

// App Secret can be retrieved from the App Dashboard
const APP_SECRET = '';

// Arbitrary value used to validate a webhook
const PAGE_ACCESS_TOKEN = '';

// Generate a page access token for your page from the App Dashboard
const VALIDATION_TOKEN = '';

// URL where the app is running (include protocol). Used to point to scripts and
// assets located at this address.
const SERVER_URL = '';

Add description for config values
Add description for config values
