make outline for class Car
set up class Car with appropriate instance variables and methods
make changes to methods and attributes of class Car

* move manager markup and constant depreciation to instance variables

* def methods value and price.

* make value private.
move around attributes to appropriate place- method or variable
define loosely value and damages
set up initial outline for class Damage
create setter attributes for class Damage
test for all methods and attributes of class Car
made some changes in methods after testing with car_app.rb

* value- went back and forth on making this a private variable. I had to add a var inside the method to make it work.

* price- added a parameter which shoud be equal to the value. so the value will have to be declared inside another var and pass that as the arg in price.
make adjust ments to class UsedCar

*  move constant mileage dep to methods, but thinking i should add it back to accessors.

* make adjustments to used car value formula, still need to add damage portion
receive these errors:

[1] pry(main)> a = UsedCar.new("VW", "Rabbit", 2007, 10000)
ArgumentError: wrong number of arguments (4 for 5)
from UsedCar.rb:9:in `initialize'
[2] pry(main)> a = UsedCar.new("VW", "Rabbit", 2007, 10000, 100000)
ArgumentError: wrong number of arguments (5 for 4)
from /Users/Emma/GA_Projects/wdi_1_ruby_hw_auto_sales/lib/Car.rb:8:in `initialize'
final touches to Car.rb
add accessor traits description and cost

* I don't think it needs anything else

* I'm not sure it needs the require UsedCar
I set up the CarLot class the way I thought it should be

* I am not sure how to add cars to the lot

* I have not set defined the methods
car_app

* I worked through some of my issues by making sure I defined mileage before calling value and price
this is all set- all tests ran smoothly