add dialects module docstring

Technologicat · Technologicat · commit f93339ec2fcd · 2021-05-01T19:09:56.000+03:00
diff --git a/unpythonic/dialects/__init__.py b/unpythonic/dialects/__init__.py
@@ -1,4 +1,15 @@
 # -*- coding: utf-8 -*-
+"""Dialects: Python the way you want it.
+
+These dialects, i.e. whole-module syntax transformations, are powered by
+`mcpyrate`'s dialect subsystem. The user manual is at:
+    https://github.com/Technologicat/mcpyrate/blob/master/doc/dialects.md
+
+We provide these dialects mainly to demonstrate how to use that subsystem
+to customize Python beyond what a local macro expander can do.
+
+For examples of how to use the dialects, see the unit tests.
+"""
 
 # re-exports
 from .lispython import Lispython  # noqa: F401
