adding a walkthrough for a full salt cluster install. One master on Mac OS, one minion on VirtualBox+Valgrant
removed first person, credits, and fixed a few typos. Added a comment about configuration files being YAML files
one last first person sentence
another typo
another typo
another typo again
spelling
Merge pull request #8567 from SimpleApp/develop

Max OS X ( maverick) salt cluster walkthrough