Homework 4.24.14 - Auto Dealership practicing Classes (Initial submission)

Please note that I have developed classes for car, used car, car dealership and damage.

It can successfully be used through pry.  You can request the value of a car (including age deduction and mileage deduction).

Areas still being worked on:
 - User interface app => Having trouble listing the array to show car inventory 
- Damage => Having some trouble figuring out how damage should be input for a car so it can later be accessed.  Confused by having it in a separate class and how that would work if you wanted to list damage with initial input.
- Haven't fulfilled the "private" requirement yet - currently I am choosing to display my inventory but maybe I just display certain specs instead?