adding constructor injection, adding gradle file, adding display interface
adding display tests, now that we are in the helper classes we need to test without mocks
refactoring tests
more classes and tests
Delete VendingTest.java

removing dupe
added test for chips
Merge branch 'master' of https://github.com/scoobycoder/vendingMachine
Merge pull request #1 from scoobycoder/master

merging David/Nates with Nates