add analytics

app/views/layouts/_footer.html.haml

@@ -65,4 +65,12 @@
         %li
           =link_to "Privacy" , page_path(:privacy)
       © All Rights Reserved, Web Dev Camp, a subsidary of Lightning Raisa & Torsten Oy
-/ /FOOTER
+:javascript
+  (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','https://www.google-analytics.com/analytics.js','ga');
+
+  ga('create', 'UA-76401513-1', 'auto');
+  ga('send', 'pageview');
+