Add project development note

README.md

@@ -1 +1,7 @@
-# larktools
+# larktools
+
+## Development
+This package is using [hatch](https://hatch.pypa.io/1.12/) as project managment tool.
+
+Install hatch via `pip`: `pip install hatch`.
+For running tests using hatch, see the [hatch run tests documentation](https://hatch.pypa.io/1.9/community/contributing/#run-the-tests).