Merge pull request grpc#476 from carl-mastrangelo/UA

Move tracking snippet to top of page and load async

_layouts/base.html

@@ -8,6 +8,13 @@
     <meta name="description" content="A high-performance, open-source universal RPC framework. Client applications can directly call methods on a server application on a different machine as if it was a local object.">
     <title>grpc / {{ page.title }}</title>
 
+    <script>
+      window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
+      ga('create', 'UA-60127042-1', 'auto');
+      ga('send', 'pageview');
+    </script>
+    <script async src='//www.google-analytics.com/analytics.js'></script>
+
     <!-- Webfont -->
     <link href='http://fonts.googleapis.com/css?family=Roboto:400,100,100italic,300,300italic,400italic,500,500italic,700,700italic,900,900italic' rel='stylesheet' type='text/css'>
 
@@ -73,17 +80,6 @@
     {% if page.path == 'blog/index.html' %}
       <script src="{{ site.baseurl }}/js/mc-validate.js"></script>
     {% endif %}
-
-    <script>
-      (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-60127042-1', 'auto');
-      ga('send', 'pageview');
-
-    </script>
 
     {% if page.customjs %}
       <script  async="" defer="" type="text/javascript" src="{{ page.customjs }}"></script>