docs: add markdown readme

Author: drlkf

README.md

@@ -0,0 +1,13 @@
+# megaparsec-utils
+Utilities to use on top of the
+[Megaparsec](https://hackage.haskell.org/package/megaparsec) library.
+
+# Running tests
+Make sure your build passes tests using [Stack](https://docs.haskellstack.org/en/stable/).
+
+# Contributing
+This repository uses [Conventional
+Commits](https://www.conventionalcommits.org/en/v1.0.0/) to generate versions
+with [Semantic Release](https://github.com/semantic-release/semantic-release),
+so make sure your commits are compliant. Pull requests are rebased, not
+squashed, so make sure your commits make sense as well.

README.org

@@ -6,8 +6,8 @@ maintainer: [email protected]
 copyright:  2024 drlkf
 
 extra-source-files:
-- README.org
-- CHANGELOG.md
+  - README.md
+  - CHANGELOG.md
 
 description: Utilities for the Megaparsec library.