simple-node-app is an example of a web-app that serves static resources like index.html
You don't need to follow the steps described below. But if you are curious, this how the app is generate and why it was generate like that.
TODO tell more about that ...
npx create-esm -y
npm install express --save
(--save option indicates that you save it to your package.json også)
Can mention that the app is integrated with Travis