Open in Visual Studio. Tests should be runnable using standard test runner.

##Assumptions

• When multiple pricing rules are defined, the last one defined wins
• The prices can be input at every round of checkout
• The program must be run again in order to have a different cart (i.e. cart items are defined as input into program)
• The prices can be input from a json file with my own specification (as defined schema was a string which changed throughout document)