Update setup.cfg with release improvements (#19)

Add long description and other required fields.

setup.cfg

@@ -2,6 +2,17 @@
 name = flux-local
 version = 0.0.1
 description = flux-local is a python library and set of tools for managing a flux gitops repository, with validation steps to help improve quality of commits, PRs, and general local testing.
+long_description = file: README.md
+long_description_content_type = text/markdown
+prodid = github.com/allenporter/flux-local
+url = https://github.com/allenporter/flux-local
+author = Allen Porter
+author_email = [email protected]
+license = Apache-2.0
+license_file = LICENSE
+classifiers =
+    License :: OSI Approved :: Apache Software License
+
 
 [options]
 packages = find: