def find_reservation(key)
      path = "reservation/#{key}"
      result = call(path, http_method: :get)
      reservation = ShakeTheCounter::Reservation.new(result)
      return reservation
    end
def find_reservation(key)
      path = "reservation/#{key}"
      result = call(path, http_method: :get)
      reservation = ShakeTheCounter::Reservation.new(result)
      return reservation
    end
Find a reservation
 GET /api/v1/reservation/{reservationKey}

 @return Reservation