Add Google Analytics code

Author: zoltantothcom

index.html

@@ -24,5 +24,13 @@
 
       return t;
     }(document, "script", "twitter-wjs"));</script>
+    <!-- Google Analytics -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=UA-25262063-2"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+      gtag('config', 'UA-25262063-2');
+    </script>
   </body>
 </html>