Update meta data to indicate lack of Py2 support

setup.py

@@ -26,13 +26,9 @@ classifiers = """\
 Intended Audience :: Developers
 License :: OSI Approved :: Zope Public License
 Programming Language :: Python
-Programming Language :: Python :: 2
-Programming Language :: Python :: 2.6
-Programming Language :: Python :: 2.7
 Programming Language :: Python :: 3
-Programming Language :: Python :: 3.2
-Programming Language :: Python :: 3.3
 Programming Language :: Python :: 3.4
+Programming Language :: Python :: 3.5
 Programming Language :: Python :: Implementation :: CPython
 Programming Language :: Python :: Implementation :: PyPy
 Topic :: Database

tox.ini

 [tox]
 envlist =
-    py26,py27,py32,py33,py34,pypy,simple
+    py34,py35,simple
 
 [testenv]
 commands =
@@ -24,7 +24,7 @@ deps =
 [testenv:simple]
 # Test that 'setup.py test' works
 basepython =
-    python2.7
+    python3.4
 commands =
     python setup.py test -q
 deps = {[testenv]deps}