Vending Machine Problem

Enclosed is a Gradle project.

The goal is to implement a vending machine as described by the interfaces in the project (see the Javadocs in the interface files).

The tasks:

• Create a Git repository to track your changes to the project.
• Create classes that implement the interfaces.
• The method VendingMachine.observeInsertedMoney (commented out) uses RxJava's Observable class. Add the dependency for RxJava to the project and implement observeInsertedMoney. Have it emit the coins inserted into the machine by the customer. It should also emit an empty list when change is dispensed/the customer completes their order.
• Add unit tests for methods in your VendingMachine implementation, including VendingMachine.observeInsertedMoney.