Document zero-configuration installation of Kotlin/JS packages 🎉

README.md

@@ -55,6 +55,12 @@ You can skip this step if you have `create-react-app` already installed.
 To develop applications in Kotlin that use React you need to use a [Kotlin wrapper for React](https://www.npmjs.com/package/@jetbrains/kotlin-react).
 You can find a documentation for it and examples in the [module's repository](https://github.com/JetBrains/kotlin-wrappers/tree/master/kotlin-react).
 
+### Adding Kotlin/JS packages
+
+**No configuration is required** to add packages written in Kotlin to a project based on Create React Kotlin App, we take care of it for you. 
+Simply run `npm install kotlinx-coroutines-core` to add [https://www.npmjs.com/package/kotlinx-coroutines-core](coroutines) support, 
+or `npm install @jetbrains/kotlin-react-router-dom` to install the [wrapper for React Router DOM](https://www.npmjs.com/package/@jetbrains/kotlin-react-router-dom).
+
 ### Creating an App
 
 To create a new app, run: