Problem: Create an application for maintaining a contact list.
 Address Book
   1.) Add Contacts to the book.
   2.) Search for Contacts
   3.) Display All of the Contacts

 Needs:
   - Store the contacts
   - Use file storage to store and load the contacts


Objects:
 - each contact (many)
 - the address book (one)


Contact
=======
Attributes:
 - Name
 - Phone
 - Email
 - Address  -
 - City      |_ Could be a separate object
 - State     |  But, we don't need them to be (design decision)
 - Zip      -
 - Birthday
Behaviors:
 - get/set all the attributes
 - display
 - saveToFile
 - loadFromFile


Address Book
============
Attributes
 - contacts
 - count of the contacts
Behaviors
 - sort (later)
 - addContact
 - deleteContact
 - search
 - getCount
 - at(i)
   Returns the ith contact.  (Array index)