add g analytics

index.html

@@ -113,5 +113,20 @@
 <script src="js/module/array2d.js"></script>
 <script src="js/module/array1d.js"></script>
 <script src="js/script.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-78128848-1', 'auto');
+    ga('send', 'pageview');
+</script>
 </body>
 </html>
\ No newline at end of file