feat(promo): add promo banner script

dandenney · dandenney · commit 5cc6257a5229 · 2019-08-30T09:31:33.000-04:00
diff --git a/views/layout.ejs b/views/layout.ejs
@@ -129,5 +129,7 @@
       ga('create', 'UA-41577880-1', 'rdocumentation.org');
       ga('send', 'pageview');
     </script>
+
+    <script async src="https://promo.datacamp.com/banner.js"  />
   </body>
 </html>
