[auton-users] update address book

[Robin Sabhnani]

Hi all,

I managed to confuse the SCS's mail server by picking my lastname as the 
CS username. Now all my mails are getting bounced because there are two 
users with lastname 'sabhnani'.

If you want to send me an email, please send it to sabhnani+ at cs.cmu.edu 
instead of sabhnani at cs.cmu.edu

Thanks,
Robin