PyPi: Fix description and setup.cfg (#15107)

* Fix description and extend use of setup.cfg

* Fix lint

setup.cfg

@@ -1,3 +1,34 @@
+[metadata]
+license      = Apache License 2.0
+license_file = LICENSE.md
+platforms    = any
+description  = Open-source home automation platform running on Python 3.
+long_description = file: README.rst
+keywords     = home, automation
+classifier =
+    Development Status :: 4 - Beta
+    Intended Audience :: End Users/Desktop
+    Intended Audience :: Developers
+    License :: OSI Approved :: Apache Software License
+    Operating System :: OS Independent
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Topic :: Home Automation
+
+[options]
+packages = find:
+include_package_data = true
+zip_safe = false
+
+[options.entry_points]
+console_scripts =
+    hass = homeassistant.__main__:main
+
+[options.packages.find]
+exclude =
+    tests
+    tests.*
+
 [tool:pytest]
 testpaths = tests
 norecursedirs = .git testing_config