Add better project metadata

Author: Cleptomania

setup.cfg

@@ -1,12 +1,15 @@
 [metadata]
 name = pytiled_parser
 description = A library for parsing JSON formatted Tiled Map Editor maps and tilesets.
+long_description = file: README.md
+author = Benjamin Kirkbride
+author-email = [email protected]
 license = MIT
 license-file = LICENSE
 url = https://github.com/Beefy-Swain/pytiled_parser
 
 classifiers =
-  Development Status :: 1 - Planning
+  Development Status :: 5 - Production/Stable
   Intended Audience :: Developers
   License :: OSI Approved :: MIT License
   Operating System :: OS Independent