Update index.html

Author: IS A DEV

index.html

@@ -4,6 +4,7 @@
     <meta charSet="utf-8"/>
     <meta http-equiv="x-ua-compatible" content="ie=edge"/>
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/>
+    <script defer data-domain="is-a.dev" src="https://analytics.is-a.dev/js/script.js"></script>
     <title>is-a.dev | Free sub-domains for developers</title>
     <style>
       html, body {