[dec9] adjusted installation "next"
Added a FAQs about stashes and cleaned up some formatting.
Fleshed out a missing FAQ on ways to delete clients.
[dec9] begin documenting sensu security
Merge pull request #71 from portertech/dec9

Began documenting Sensu security, adjust installation "next"
Merge pull request #70 from joestump/master

Added a FAQs about stashes and cleaned up some formatting.