add google analytics

links.md

@@ -166,3 +166,15 @@ title: Link Research
 * http://blog.interfacevision.com/design/design-visual-progarmming-languages-snapshots/
 * http://www.squeakland.org/resources/books/readingList.jsp
 * http://worrydream.com
+
+  <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','https://www.google-analytics.com/analytics.js','ga');
+
+  ga('create', 'UA-103157758-1', 'auto');
+  ga('send', 'pageview');
+
+  </script>