Adds recommendation to add /usr/local/sbin to /usr/local/bin:/usr/local/sbin:/usr/local/bin:/Users/lyndsy/.bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/MacGPG2/bin in OSX
Merge pull request #350 from lyndsysimon/rabbitmq

Add /usr/local/sbin to PATH in OSX