Notes from Dr. Gibson's class on Vending Machine

BRAINSTORMING **
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Things the program needs to have:
* Lists to store the details:
-- 2D list, which is a list of lists
-- Multiple lists, one for name, price, quantity, etc.
   where the indexes match up (so everything at index 0
   is related: name[0], price[0], qty[0])

Things the program needs to know:
* Location of each snack
* Price of each snack
* Stock/number left of each snack

Things the program needs to be able to do:
* Get user input
* Restocking?
* How often it jams
* Show user the options
* Print/show contents of machine to user

INCREMENTAL DEVELOPMENT **
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1. Store the snack data
2. Show user what they can buy
   -- printVendMachine()
----> Test at this point, make sure printVendMachine() works
3. Get user choice
   -- getUserChoice()
----> Test at this point, make sure it only accepts valid input
4. Get money/credit card
... etc.