Added docs to show how to set support up using dell openmanage.
Added fanspeed support.
Added new state sensor to record state of the disk array.
Added / Updated Dell mibs.
Added / Updated Dell MIBS http://www.dell.com/support/home/us/en/555/…
Added Fanspeed support via Dell OpenManage + Docs
Finished dell rac support and updated mib
Forgot to say, hopefully adds the support needed for #361