Merge pull request #2968 from uswds/mb-update-readme-node

Update node and npm versions in README [2.0]

README.md

@@ -129,15 +129,15 @@ And that’s it — you should now be able to copy our code samples into your `i
 
 1. Install `Node/npm`. Below is a link to find the install method that coincides with your operating system:
 
-    - Node v4.2.3+, [Installation guides](https://nodejs.org/en/download/)
+    - Node v10.15.1, [Installation guides](https://nodejs.org/en/download/)
 
     **Note for Windows users:** If you are using Windows and are unfamiliar with `Node` or `npm`, we recommend following [Team Treehouse's tutorial](http://blog.teamtreehouse.com/install-node-js-npm-windows) for more information.
 
 2. Make sure you have installed it correctly:
 
     ```shell
     npm -v
-    3.10.8 # This line may vary depending on what version of Node you've installed.
+    6.4.1 # This line may vary depending on what version of Node you've installed.
     ```
 
 3. Create a `package.json` file. You can do this manually, but an easier method is to use the `npm init` command. This command will prompt you with a few questions to create your `package.json` file.