Add .md extension to readme

Add markdown to README

Merge branch 'master' of https://github.com/paulrus123/vendingMachineKata

fixed run path for unit test

modified README

modified README and xcodeproj settings

Add xcodeproj file settings

Add README

Remove target from xcodeproj. Only left with UnitTest target

Remove unused xcscheme and cleaned up comments

Exact change test cases working

First test of requirement to display exact change if machine can't make change for all scenarios. to add this functionality, had to edit previous test cases to "stock" money in machine as part of set up for each test_case

Fixed test case definitions for ExactChangeFunctionality

Defined test cases for ExactChangeFunctionality

Sold Out feature requirements all implemented