Loads the delivery info for restaurant and address
t() :: %Zuppler.DeliveryInfo{charge_amount: float, charge_percent: float, limit_order_amount: integer, min_order_amount: float, time: integer}
find(integer, integer) :: {:ok, t} | {:error, String.t}
find(integer, String.t) :: {:ok, t} | {:error, String.t}
find(String.t, integer) :: {:ok, t} | {:error, String.t}
find(String.t, String.t) :: {:ok, t} | {:error, String.t}