update path to match the docs path: https://salt.readthedocs.org/en/latest/topics/tutorials/standalone_minion.html.  The docs state: The file_roots setting defaults to /srv/salt for the base environment just like on the master. The configuration example was pointed at /srv/ not /srv/salt/
Merge pull request #81 from aventurella/develop

Update path to match the docs path in configuration example