update -- google analytics integration

Author: willymwai

public/index.html

@@ -21,5 +21,18 @@
 <script data-jsd-embedded data-key="177c4fd7-ee93-450b-9bc7-eed48cf7dc0b"
         data-base-url="https://jsd-widget.atlassian.com"
         src="https://jsd-widget.atlassian.com/assets/embed.js"></script>
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=UA-161162688-1"></script>
+<script>
+    window.dataLayer = window.dataLayer || [];
+
+    function gtag() {
+        dataLayer.push(arguments);
+    }
+
+    gtag('js', new Date());
+
+    gtag('config', 'UA-161162688-1');
+</script>
 </body>
 </html>