Adding GA support.
diff --git a/_layouts/default.html b/_layouts/default.html
index 4f1adcd..2fe1edb 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -23,6 +23,16 @@
 
 <html lang="en">
 <head>
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=UA-180663034-1"></script>
+    <script>
+        window.dataLayer = window.dataLayer || [];
+        function gtag(){dataLayer.push(arguments);}
+        gtag('js', new Date());
+
+        gtag('config', 'UA-180663034-1');
+    </script>
+
     <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">
@@ -159,9 +169,6 @@
 <script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.12.0/moment.min.js" type="text/javascript" ></script>
 <script src="//cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.5/moment-timezone-with-data.min.js" type="text/javascript" ></script>
 
-<!-- Google Analytics -->
-<!-- TODO: add GA wart here. -->
-
 <!-- Syntax highlighter. -->
 <script type="text/javascript">
     SyntaxHighlighter.defaults["auto-links"] = false;
diff --git a/googlefce85cba8500a10c.html b/googlefce85cba8500a10c.html
new file mode 100644
index 0000000..7ef55ef
--- /dev/null
+++ b/googlefce85cba8500a10c.html
@@ -0,0 +1 @@
+google-site-verification: googlefce85cba8500a10c.html
\ No newline at end of file