[docs] Updated required node and npm versions to match CRA docs in 'docs/create-a-new-react-app.html' (#2099)

https://facebook.github.io/create-react-app/docs/getting-started

Author: ZachMayer35

content/docs/create-a-new-react-app.md

@@ -39,7 +39,7 @@ The React team primarily recommends these solutions:
 
 [Create React App](https://github.com/facebookincubator/create-react-app) is a comfortable environment for **learning React**, and is the best way to start building **a new [single-page](/docs/glossary.html#single-page-application) application** in React.
 
-It sets up your development environment so that you can use the latest JavaScript features, provides a nice developer experience, and optimizes your app for production. You’ll need to have Node >= 6 and npm >= 5.2 on your machine. To create a project, run:
+It sets up your development environment so that you can use the latest JavaScript features, provides a nice developer experience, and optimizes your app for production. You’ll need to have Node >= 8.10 and npm >= 5.6 on your machine. To create a project, run:
 
 ```bash
 npx create-react-app my-app