Add analytics

Author: typeofweb

examples/index.html

@@ -156,6 +156,16 @@ <h2>Contacts list example</h2>
       }
     }
   </style>
+
+  <!-- Global site tag (gtag.js) - Google Analytics -->
+  <script async src="https://www.googletagmanager.com/gtag/js?id=UA-122030606-1"></script>
+  <script>
+    window.dataLayer = window.dataLayer || [];
+    function gtag() { dataLayer.push(arguments); }
+    gtag('js', new Date());
+
+    gtag('config', 'UA-122030606-1');
+  </script>
 </body>
 
 </html>