The comment claims that:
> doesn't matter if `#!/usr/bin/env bash` gets repeated later on in a hooks file
However it is a convetion that there is only one comment like that and
the `setup-hooks.sh` script already takes care of adding it if the file
didn't exist.
Alternatively, we could leave the extra comment and remove the related
code in `setup-hooks.sh`. Currently two comments are added even if the
file didn't exist.
Add the `scripts/setup-hooks.sh` script which sets the following hooks
up:
- The `post-commit` hook runs the linter after every `git commit`,
letting you know if there are code style or rule linter offenses you
need to fix.
- The `pre-push` hook runs the linter and the tests and block the `git
push` if they do not succeed.
This way you realise if everything is alright without the need of
sending a PR.
