Replaced README.md with exercise description
Adding .gitignore
Solution, projects and initial implementations
Added NCrunch files to .gitignore
Added constructors for Order and Product types
Created DiscountType enum and changed ShoppingCart as needed
Created ShoppingCart tests
Created separate classes for each Step and implemented ProductStep
Created StringExtensions.Truncate to help handling long product names
Fixed relative path for resources on Models
Organized Discount constructors
Fully implemented ShoppingCart user flow
Created tests for Discount
Created tests for StringExtensions