message: Add instructions for VoidLInux in README.md
diff: @@ -98,6 +98,14 @@ still found to be missing, please open an issue.
  zypper install freetype-devel fontconfig-devel xclip
  ```
  +##### Void Linux
  +
  +On [Void Linux](https://voidlinux.eu), install following packages before compiling Alacritty:
  +
  +```sh
  +xbps-install cmake freetype-devel freetype expat-devel fontconfig xclip
  +```
  +
  ##### Other
  If you build Alacritty on another Linux distribution, we would love some help
  