Added generated pb file so users do not need to have protoc installed.
Added generated pb file so users do not need to have protoc installed.

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