Mention Homebrew package manager in README
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I added asciidoctor to Homebrew, the package manager for macOS:
- https://github.com/Homebrew/homebrew-core/pull/20229
- https://github.com/Homebrew/homebrew-core/blob/master/Formula/asciidoctor.rb
- http://braumeister.org/formula/asciidoctor
So it would be nice to get the word out.
Do I need to also update the translations and http://asciidoctor.org/docs/install-asciidoctor-osx/, or maybe someone else would take care of those?