Merge pull request #114 from chohner/patch-1

Add README and LICENSE to pypi sdist package
diff --git a/setup.cfg b/setup.cfg
index 7c964b4..864bb9e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,6 @@
 [wheel]
 universal=1
+
+[metadata]
+description-file=README.rst
+license_file=LICENSE.txt