Added GA tracking code.

Author: kkomelin

index.html

@@ -11,6 +11,16 @@
 
     <meta name="theme-color" content="#1f2c79">
 
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=UA-111260700-1"></script>
+    <script>
+        window.dataLayer = window.dataLayer || [];
+        function gtag(){dataLayer.push(arguments);}
+        gtag('js', new Date());
+
+        gtag('config', 'UA-111260700-1');
+    </script>
+
     <script type="application/javascript">
         if ('serviceWorker' in navigator) {
             navigator.serviceWorker.register('service-worker.js').then(function(registration) {

manifest.json

@@ -1,7 +1,7 @@
 {
   "name": "PWA Demo for DrupalCamp Krasnodar 2017",
   "short_name": "PWA Demo",
-  "start_url": "./?utm_source=homescreen",
+  "start_url": "./?utm_source=app_manifest",
   "display": "standalone",
   "theme_color": "#1f2c79",
   "background_color": "#ffffff",