From command line - sbt "run-main uk.gov.hmrc.shopping.shoppingcart.ShoppingCartCommandLine"

Step 1: Shopping cart

• You are building a checkout system for a shop which only sells apples and oranges.
• Apples cost 60p and oranges cost 25p.
• Build a checkout system which takes a list of items scanned at the till and outputs the total cost
• For example: [ Apple, Apple, Orange, Apple ] => £2.05
• Make reasonable assumptions about the inputs to your solution; for example, many candidates take a list of strings as input

Step 2: Simple offers

• The shop decides to introduce two new offers
• buy one, get one free on Apples
• 3 for the price of 2 on Oranges
• Update your checkout functions accordingly