Add a section on publishing components to npm

packages/react-scripts/template/README.md

@@ -70,6 +70,7 @@ You can find the most recent version of this guide [here](https://github.com/fac
 - [Developing Components in Isolation](#developing-components-in-isolation)
   - [Getting Started with Storybook](#getting-started-with-storybook)
   - [Getting Started with Styleguidist](#getting-started-with-styleguidist)
+- [Publishing Components on npm](#publishing-components-on-npm)
 - [Making a Progressive Web App](#making-a-progressive-web-app)
   - [Opting Out of Caching](#opting-out-of-caching)
   - [Offline-First Considerations](#offline-first-considerations)
@@ -1699,6 +1700,10 @@ Learn more about React Styleguidist:
 * [GitHub Repo](https://github.com/styleguidist/react-styleguidist)
 * [Documentation](https://react-styleguidist.js.org/docs/getting-started.html)
 
+## Publishing Components on npm
+
+Create React App doesn't provide any built-in functionality to publish a component on npm. If you're ready to extract a component from your project so other people can use it, we recommend moving it to a separate directory outside of your project and then using a tool like [nwb](https://github.com/insin/nwb#react-components-and-libraries) to prepare it for publishing.
+
 ## Making a Progressive Web App
 
 By default, the production build is a fully functional, offline-first