Update setup.py

Author: Knio

setup.py

@@ -23,9 +23,9 @@
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Scientific/Engineering :: GIS',
         'Topic :: Software Development :: Libraries :: Python Modules',