Add some type of CI to this repo (probably github), that runs [shellcheck](https://github.com/koalaman/shellcheck/) and [markdownlint](https://github.com/DavidAnson/markdownlint/) when people commit to this repo.
Add some type of CI to this repo (probably github), that runs shellcheck and markdownlint when people commit to this repo.