issue #9 added Python 2.x qualifier

Author: Lee Kamentsky

setup.py

@@ -56,6 +56,7 @@ def get_version():
     packages=['bioformats'],
     classifiers=['Development Status :: 5 - Production/Stable',
                  'License :: OSI Approved :: GNU General Public License v2 (GPLv2)',
+                 'Programming Language :: Python :: 2 :: Only',
                  'Programming Language :: Java',
                  'Topic :: Scientific/Engineering :: Bio-Informatics',
                  'Topic :: Multimedia :: Graphics :: Graphics Conversion'