message: docs(): add instructions for mac apps
diff: @@ -186,6 +186,13 @@ sudo cp target/release/alacritty /usr/local/bin # or anywhere else in $PATH
  cp Alacritty.desktop ~/.local/share/applications
  ```
  +To build an application for macOS, run
  +
  +```sh
  +make app
  +cp -r target/release/osx/Alacritty.app /Applications/Alacritty.app
  +```
  +
  ## Configuration
  Although it's possible the default configuration would work on your system,
  