DESIGN - REFACTORING - GILDED ROSE - removed superficial C Sharp code.
DESIGN - REFACTORING - GILDED ROSE - Made the program run. None of the test passes as of now.
DESIGN - REFACTORING - GILDED ROSE - Created classes for each type of the item that we are dealing with.

Base Item class comes up with Update, UpdateSellin and UpdateQuality methods, which can be leveraged by the specific item classes.

This is basically what we are doing.
DESIGN - REFACTORING - GILDED ROSE - Added a visual studio test project.