Hi and thanks for the tutorial I am following here: https://www.fullstackreact.com/articles/using-create-react-app-with-a-server/ I was wondering what was the `start-client.js` file during my reading and I found out [here](https://github.com/fullstackreact/food-lookup-demo/blob/231a6afb49914ca14d13d59c1cde2a78a782241a/start-client.js#L1) that it is just a wrapper for `npm start --prefix client`. Why did you do that?