Updated Python version number.

Author: jburhenn

setup.py

@@ -17,7 +17,7 @@
                'Intended Audience :: Developers',
                'Programming Language :: Python',
                'Programming Language :: Python :: 2.7',
-               'Programming Language :: Python :: 3.5',
+               'Programming Language :: Python :: 3',
                'Topic :: Software Development',
                'Topic :: Communications',
                'Topic :: Internet',