***********************************************************
 Using the "computer" program to store person information 
***********************************************************

After installation you can run the "computer" program to create a person 
and add a mobile phone for a person.  It can also describe a person or state 
or return a person's phone number.  

The "computer" command can be run in two ways.  It can execute one command
from the command line as follows:

    > computer what is george\'s phone number

Note: it has to have a back slash before the apostrophe or the shell will
want a matching closing quote.

Alternatively, "computer" can be run interactively by just typing:

    > computer

It will then prompt you for commands.  The commands "computer" accepts in 
this version are:

   "add person" - adds a new person to the database.

   "add city" - adds a new city to the database 
                (not of much use in this version).

   "describe <name>" - describes any person(s) with the name <name> in 
                       the database.

   "list cities in <state>" - lists the cities in the database for state 
                              <state>.

   "<name>'s mobile phone is <number>" - adds the phone number <number> 
                                         to the person <name>.

   "what is <name>'s number" - prints out the phone number for the person 
                               <name>.


