README note about shell logout behavior
It was discovered from a ticket that the Paramiko and OpenSSH transports
behave differently regarding logouts at the end of a run_command. On
exit, when using Paramiko, this runs a logout script while OpenSSH does
not. Adding a note to the README.rst to make this known.
Also updating setup and spec to bump version number.
Fixes: https://pagure.io/python-pytest-multihost/issue/24