message: docs(UPGRADE-GUIDE): add link to angular/universal-starter
diff: @@ -63,4 +63,4 @@ export class ServerAppModule { }
  ## Angular 4 / platform-server example
  -An official starter will be available soon at `angular/universal-starter`, but for now you can see a fully functional demo of Angular4 with platform-server [here](https://github.com/FrozenPandaz/ng-universal-demo), to compare it to your current older application.
  +An official starter can be found at [angular/universal-starter](https://github.com/angular/universal-starter)
  