note python 3.6 support

Author: derek73

setup.py

@@ -33,6 +33,7 @@ def read(fname):
           'Programming Language :: Python :: 3.3',
           'Programming Language :: Python :: 3.4',
           'Programming Language :: Python :: 3.5',
+          'Programming Language :: Python :: 3.6',
           'Development Status :: 5 - Production/Stable',
           'Natural Language :: English',
           "Topic :: Software Development :: Libraries :: Python Modules",