add google analytics code

static/js/ga.js

@@ -0,0 +1,8 @@
+// google analytics
+(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+ga('create', 'UA-574889-7', 'localtunnel.me');
+ga('send', 'pageview');

static/js/index.js

@@ -34,3 +34,6 @@ socket.on('close', function () {
     request_counter.incrementTo(0);
     user_counter.incrementTo(0);
 });
+
+// load google analytics after above starts
+require('./ga');