fixed setup.cfg to allow uploading to pypi (#306)

Author: alex

setup.cfg

@@ -1,14 +1,14 @@
 [metadata]
 name = bcrypt
 version = attr: bcrypt.__about__.__version__
-description = attr: bcrypt.__about__.__summary__
+description = Modern password hashing for your software and your servers
 long_description = file: README.rst
 long_description_content_type = text/x-rst
-license = attr: bcrypt.__about__.__license__
+license = Apache License, Version 2.0
 license_file = LICENSE
-url = attr: bcrypt.__about__.__uri__
-author = attr: bcrypt.__about__.__author__
-author_email = attr: bcrypt.__about__.__email__
+url = https://github.com/pyca/bcrypt/
+author = The Python Cryptographic Authority developers
+author_email = cryptography-dev@python.org
 classifiers =
     Development Status :: 5 - Production/Stable"
     License :: OSI Approved :: Apache Software License"