Fixes #49 - Add universal google analytics

We’re opting for the ‘alternative async tracking snippet’ from
https://developers.google.com/analytics/devguides/collection/analyticsjs
/#alternative_async_tracking_snippet. Given we’re primarily targeting
modern browsers, I think it’s nicer to go for the version supporting
preloading.

Author: addyosmani

public/index-static.html

@@ -66,5 +66,13 @@
       console.log('service worker is not supported');
     }
   </script>
+  <!-- Google Analytics -->
+  <script>
+  window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
+  ga('create', 'UA-79730498-1', 'auto');
+  ga('send', 'pageview');
+  </script>
+  <script async src='https://www.google-analytics.com/analytics.js'></script>
+  <!-- End Google Analytics -->
   </body>
 </html>

src/views/index.ejs

@@ -66,5 +66,13 @@
       console.log('service worker is not supported');
     }
   </script>
+  <!-- Google Analytics -->
+  <script>
+  window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
+  ga('create', 'UA-79730498-1', 'auto');
+  ga('send', 'pageview');
+  </script>
+  <script async src='https://www.google-analytics.com/analytics.js'></script>
+  <!-- End Google Analytics -->  
   </body>
-</html>
+</html>