Add installation using Homebrew

[thedrow]

It's easier to manage CLI updates with Homebrew, you don't have to install NodeJS yourself and it's generally the best practice to allow the installation of CLI tools with Homebrew.
Please contribute a formula to the homebrew repository or create your own tap.

[mogeko]

I tried to submit an PR to Homebrew/homebrew-core.

But I got stuck in the audit step:

$ brew audit --new aicommits
aicommits:
  * GitHub repository too new (<30 days old)
Error: 1 problem in 1 formula detected

Maybe we should wait until this project is more stable before trying to make a Homebrew Formula.

[pavelzw]

homebrew/homebrew-core#125882 fixed this issue (ignore the PR closed icon, it still got merged into master).

[mogeko]

homebrew/homebrew-core#125882 fixes this issue.

that's right.