add cname, ga id, remove readme (#1958)

Author: wing328

website/README.md

@@ -26,6 +26,10 @@ const siteConfig = {
   // e.g., for the https://JoelMarcey.github.io site, it would be set like...
   //   organizationName: 'JoelMarcey'
 
+  cname: 'openapi-generator.tech',
+
+  gaTrackingId: 'UA-132927057-1',
+
   // For no header links in the top nav bar -> headerLinks: [],
   headerLinks: [
     {doc: 'installation', label: 'Get Started'},