Corrected README.md
Initial check-in of adv_cmds/ using adv_cmds-35.tar.gz (2001-04-10, mac-os-x-100)

Source: http://opensource.apple.com/tarballs/adv_cmds/adv_cmds-35.tar.gz
SHA-1: 826730db1b202cf28c094c79f364678e213331e1
OS X Release: mac-os-x-100 (source release #001)
File Modification Timestamp (Oldest): 1999-04-14 23:23:23
File Modification Timestamp (Newest): 2001-04-10 03:53:35