app.get('/webhook', function(req, res) {
if (req.query['hub.mode'] === 'subscribe' &&
req.query['hub.verify_token'] ===
) {
console.log("Validating webhook");
res.status(200).send(req.query['hub.challenge']);
} else {
console.error("Failed validation. Make sure the validation tokens match.");
res.sendStatus(403);
}
});
