message: docs: just use yarn in getting started guide
diff: @@ -8,10 +8,6 @@ oclif is written in Node. You'll need Node as well as npm, which is a package ma
  If you do not have them already, follow the instructions here to install npm and Node together: https://docs.npmjs.com/getting-started/installing-node
  -Next, install [Yarn](https://yarnpkg.com/en/) for dependency management.
  -
  -You can check it's installed by running `$ yarn`.
  -
  ## Creating Your First CLI with oclif
  Now you're ready to create your first CLI with oclif. There are three stages: CLI creation, command development, and publishing to NPM.
  @@ -139,7 +135,7 @@ const location = flags.location || 'location'`
  To publish to npm, just run:
  ```sh-session
  -$ yarn publish
  +$ npm publish
  ```
  You'll need to [register with npm](https://www.npmjs.com/signup) and have verified your email address in order to publish.
  