Register `Brewfile`s as Ruby files (#2432)
Register `Brewfile`s as Ruby files (#2432)

A `Brewfile` (sometimes named `.Brewfile`) is a bundler for Homebrew packages.
Brewfiles are written in Ruby and are functionally similar to Gemfiles.

`homebrew-bundle` on GitHub: <https://github.com/Homebrew/homebrew-bundle>.
`brew bundle` Manpage: <https://docs.brew.sh/Manpage#bundle-subcommand>.
zyedidia/micro,zyedidia/micro