Added google analytics

layouts/default.erb

@@ -34,6 +34,14 @@
     <!-- Place this tag in your head or just before your close body tag. -->
     <script async defer src="https://buttons.github.io/buttons.js"></script>
 
+    <!-- Google Analytics -->
+    <script>
+    window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
+    ga('create', 'UA-25444917-1', 'auto');
+    ga('send', 'pageview');
+    </script>
+    <script async src='https://www.google-analytics.com/analytics.js'></script>
+
     <%= asset :css, :main %>
 
     <%= content_for(@item, :head) %>