Checkout front end
This is an app which satisfies the follow user stories:
As a User I can view all products. As a User I can add a product to my shopping cart. As a User I can remove a product from my shopping cart. As a User I can view the total price for the products in my shopping cart. As a User I can apply a voucher to my shopping cart. As a User I can view the total price for the products in my shopping cart with discounts applied. As a User I am alerted when I apply an invalid voucher to my shopping cart. As a User I am unable to Out of Stock products to the shopping car