Update header.html

Author: lefticus

_includes/header.html

@@ -1,4 +1,3 @@
-
 <!-- TOP RIGHT RIBBON: START COPYING HERE -->
 <div class="github-fork-ribbon-wrapper right">
   <div class="github-fork-ribbon">
@@ -7,7 +6,16 @@
 </div>
 
 
+<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-384017-5', 'chaiscript.com');
+  ga('send', 'pageview');
 
+</script>
 
 
 <nav class="navbar navbar-default" role="navigation">