welcome message displays, CLI inherits from Python's Cmd module
helpful documentation items
'options' and 'quit' commands added
add command is as complete as can be without backend support. Other commands are outlined
edit command is nearly as complete as can be without backend support.  Handle empty line (command)  case better.
frontend w/o backend support essentially finished
fixed merge conflicts
change Contact constructor to allow make blank contact
command line interface is complete as far as I can tell; time for testing!
add trivial explanation of how to open the Address Book applet
added a couple extra comments
Merge branch 'master' into feature/frontend
udpate cli to match changes in addressbook.py