added google analtics tracking code to index

index.html

@@ -15,7 +15,19 @@
   <meta name="description" content="Photomosaics 3.0">
 
   <meta name="viewport" content="width=device-width,initial-scale=1">
+<script type="text/javascript">
 
+  var _gaq = _gaq || [];
+  _gaq.push(['_setAccount', 'UA-40518979-1']);
+  _gaq.push(['_trackPageview']);
+
+  (function() {
+    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+  })();
+
+</script>
 </head>
 
 <body>