Update trove classifiers for python 3.

Author: Lucas Wiman

setup.py

@@ -48,6 +48,13 @@ def run_tests(self):
         'Intended Audience :: Developers',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 2.6",
+        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.3",
+        "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
         'Topic :: Internet :: WWW/HTTP',
     ],
     install_requires=install_requires,