docs: use markdown for readme file

README.md

@@ -1,13 +1,9 @@
-.. -*- mode: rst -*-
 
-rattail-tutorial
-================
+# rattail-tutorial
 
 This project is intended for use as a "tutorial" for Rattail app development.
 
 It contains documentation for the tutorial itself, but also contains
 code for the tutorial app, which users may run locally for testing.
 
-See the `Rattail website`_ for more info.
-
-.. _`Rattail website`: https://rattailproject.org/
+See the [Rattail website](https://rattailproject.org/) for more info.

pyproject.toml

@@ -8,7 +8,7 @@ build-backend = "hatchling.build"
 name = "rattail-tutorial"
 version = "0.3.1"
 description = "Rattail Development Tutorial"
-readme = "README.rst"
+readme = "README.md"
 authors = [{name = "Lance Edgar", email = "lance@edbob.org"}]
 license = {text = "GNU GPL v3+"}
 classifiers = [