* pip based installations default to ZeroMQ:
pip install salt
* pip based installations can additionally install REAT deps
pip install salt[RAET]
On local checkout's:
* pip based installation with requirements files can choose which, or both, just use the right requirements file(s)
pip install -r raet-requirements.txt
* pass ``--salt-transport` to choose which, `zeromq`, `raet` or `both`. Choosing `raet` removes the `zeromq` deps
