message: doc(HelloWorld): Remove fs-extra from dependencies
  No longer required.
diff: @@ -18,10 +18,10 @@ Initialize the Node *package.json* file:
  npm init --yes
  ```
  -Add `itk` and [`fs-extra`](https://www.npmjs.com/package/fs-extra) to your project's dependencies:
  +Add `itk` to your project's dependencies:
  ```
  -npm install --save itk fs-extra
  +npm install --save itk
  ```
  Let's write some code! Populate *hello.cxx* with our Hello World program:
  