Add documentation for running Parlinter as a pre-commit hook

[rgdelato]

Prettier has documentation for running it as a pre-commit hook (which is how I personally use it), and if Parlinter is a safe code transform (running it will never change the meaning of the code), then it would probably be best to use it automatically on save and/or on commit.

For reference, here's Prettier's documentation:
https://github.com/prettier/prettier#pre-commit-hook

However, I don't know if the Clojure/ClojureScript ecosystems have projects similar to husky or pre-commit that allow for configuring Git hooks.