Fix descripton and build universion wheels

Author: codingjoe

setup.cfg

@@ -3,8 +3,7 @@ name = yeelib
 author = Johannes Hoppe
 author-email = [email protected]
 summary = Python library for Xiaomi Mi Yeelight.
-description-file = README.rst
-description-content-type = text/x-rst; charset=UTF-8
+long_description = README.rst
 home-page = https://github.com/codingjoe/yeelib
 license = Apache-2
 classifier =
@@ -30,6 +29,9 @@ keywords =
 packages =
     yeelib
 
+[bdist_wheel]
+universal = 1
+
 [pycodestyle]
 max-line-length=99
 exclude = fixtures.py