docs: use markdown for readme file

README.md

@@ -0,0 +1,11 @@
+
+# rattail-harvest
+
+Rattail is a retail software framework, released under the GNU General
+Public License.
+
+This package contains software interfaces for
+[Harvest](https://www.getharvest.com/).
+
+Please see the [Rattail Project](https://rattailproject.org/) for more
+information.

README.rst

@@ -1,14 +0,0 @@
-
-rattail-harvest
-===============
-
-Rattail is a retail software framework, released under the GNU General
-Public License.
-
-This package contains software interfaces for `Harvest`_.
-
-.. _`Harvest`: https://www.getharvest.com/
-
-Please see the `Rattail Project`_ for more information.
-
-.. _`Rattail Project`: https://rattailproject.org/

pyproject.toml

@@ -8,7 +8,7 @@ build-backend = "hatchling.build"
 name = "rattail-harvest"
 version = "0.3.2"
 description = "Rattail integration package for Harvest"
-readme = "README.rst"
+readme = "README.md"
 authors = [{name = "Lance Edgar", email = "lance@edbob.org"}]
 license = {text = "GNU GPL v3+"}
 classifiers = [