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)