Added analytics for docs

docs/index.html

@@ -8,7 +8,19 @@
   <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
   <link rel="stylesheet" href="//unpkg.com/docsify/lib/themes/vue.css">
   <script src="//cdn.jsdelivr.net/npm/mermaid@8.4.1/dist/mermaid.min.js"></script>
-  <!-- <script src="//localhost:9000/mermaid.js"></script> -->
+  <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-153180559-1', 'auto');
+    if(location) {
+       ga('send', 'pageview', location.hash);
+     }
+
+    </script>
+
   <style>
   .markdown-section {
     max-width: 1200px;
@@ -43,8 +55,19 @@
     var num = 0;
     mermaid.initialize({ logLevel:0, startOnLoad: false, themeCSS:'.label { font-family: Source Sans Pro,Helvetica Neue,Arial,sans-serif; }' });
 
+  </script>
+  <script>
+   window.onhashchange = function(a) {
+     //code
+     console.log('send', a);
+     if(location) {
+       ga('send', 'pageview', location.hash);
+     }
+  }
   </script>
   <script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
   <script src="//unpkg.com/docsify/lib/plugins/search.min.js"></script>
+  <scrpt src="//unpkg.com/docsify/lib/plugins/ga.min.js"></scrpt>
 </body>
 </html>
+<!--  -->