initial version; PR is welcome

What's Changed

• trigger documentation building by @ringabout in #1
• trigger documentation building again by @ringabout in #2
• fixes #3; fixes macOS CI by @ringabout in #4
• adds a note for installment by @ringabout in #5

New Contributors

• @ringabout made their first contribution in #1

Full Changelog: https://github.com/nim-lang/htmlparser/commits/v0.1.0