Attempt at test file

this is the rudimentary test file attempt
More modifications per tutorial

Completion of classes tutorial
car class completed

I want the car to keep track of it's position and how much gas it has
The initialize method should set the position to 0 and gas to 10
(gallons)
I should be able to drive the car and tell it how many miles to drive.
The car should adjust it's position and gas mileage here
I want the car to be able to fill up gas and print out how much the gas
cost