title: Use data from Push in Web Push Notifications
body: <p>I am trying to setup a demo for Web Push Notifications using Service Workers. In the service worker, sw.js, I have the following code.</p>
  
  <pre><code>var title = 'Yay a message.';
  var body = 'We have received a push message.';
  var icon = 'icon.png';
  var tag = 'simple-push-demo-notification-tag';
  
  console.log("Hello!");
  
  self.addEventListener('push', function(event) {
  event.waitUntil(
      self.registration.showNotification(title, {
          body: body,
          icon: icon,
          tag: tag
      })
  );
  });
  </code></pre>
  
  <p>This works okay. I wish to receive data that I have sent with my push <code>cURL</code> request like <code>title</code> and more. Is there any way to get all that data here in this <code>waitUntil</code> method?</p>
  
  <p>Any help is highly appreciated.</p>