message: chore: Add mac instructions to install Xcode
diff: @@ -16,7 +16,12 @@ You will need the following tools installed:
  - [Node](https://nodejs.org) >= 14.15.0 (check by running `node --version`) - This is the version being enforced on our builds
  - [Yarn](https://yarnpkg.com/getting-started/install) >= 1.22.10 (check by running `yarn --version`)
  - Note: There is a [known name collision](https://github.com/yarnpkg/yarn/issues/673) between Yarn package manager and Hadoop YARN. If you have Hadoop YARN installed, replace `yarn` with `yarnpkg` in the commands below.
  -
  +- **macOS only** [Xcode](https://wilsonmar.github.io/xcode/#XcodeInstall). This is needed when installing some dev dependencies (like spectron). After installing Xcode, run the following commands from a command terminal:
  +```
  + xcode-select --install
  + sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
  + sudo xcodebuild -license accept
  +```
  We recommend [VS Code](https://code.visualstudio.com/) for [editing/debugging](#using-vs-code), but you can use whichever editor you prefer. The [extensions we recommend](../.vscode/extensions.json) should be automatically suggested to you when opening this repository's folder in VS Code.
  