refactor: Update startup message for example app to include URL

Allows clicking the URL to launch example app, this also allows some IDEs such as WebStorm to launch integrated debugger far more easily

utils/server.js

@@ -7,4 +7,4 @@ app.use('/external', express.static('external'))
 app.use('/editor', express.static('editor'))
 app.use('/', express.static('editor'))
 
-app.listen(8000, () => console.log('Example app listening on port 8000!'))
+app.listen(8000, () => console.log('Example app listening on http://127.0.0.1:8000!'))