Update: reorder README, general Usage documetnation first
Update: reorder README, general Usage documetnation first

circonus-labs/circonus-one-step-install,circonus-labs/circonus-one-step-install,maier/circonus-one-step-install,maier/circonus-one-step-install,circonus-labs/circonus-one-step-install,maier/circonus-one-step-install