### Add item to cart
POST https://cart.tornberg.me/api/12345
Content-Type: application/json

{
	"sku": "763281",
	"quantity": 1
}

### Update quanity of item in cart
PUT https://cart.tornberg.me/api/12345
Content-Type: application/json

{
	"id": 1,
	"quantity": 1
}

### Delete item from cart
DELETE https://cart.tornberg.me/api/12345/1


### Set delivery

POST https://cart.tornberg.me/api/12345/delivery
Content-Type: application/json

{
	"provider": "postnord",
	"items": [
		{
			"id": 1,
		}
	]
}