Add Python 3.4 configuration to tox.
Add Python 3.4 configuration to tox.

pombredanne/python-lazy-object-proxy,ionelmc/python-lazy-object-proxy,ionelmc/python-lazy-object-proxy,github4ry/wrapt,akash1808/wrapt,linglaiyao1314/wrapt,linglaiyao1314/wrapt,github4ry/wrapt,wujuguang/wrapt,GrahamDumpleton/wrapt,akash1808/wrapt,wujuguang/wrapt,pombredanne/wrapt,GrahamDumpleton/wrapt,pombredanne/wrapt,pombredanne/python-lazy-object-proxy