Add top-level .py files to lint.
Add top-level .py files to lint.

GabrielNicolasAvellaneda/riak-python-client,basho/riak-python-client,basho/riak-python-client,bmess/riak-python-client,basho/riak-python-client,bmess/riak-python-client,GabrielNicolasAvellaneda/riak-python-client