def photos
      return all_photos if @json["photos"].blank?
      @json["photos"]["groups"].select { |g| g["type"] == "venue" }.first["items"].map do |item|
        Foursquare::Photo.new(@foursquare, item)
      end
    end
def photos
      return all_photos if @json["photos"].blank?
      @json["photos"]["groups"].select { |g| g["type"] == "venue" }.first["items"].map do |item|
        Foursquare::Photo.new(@foursquare, item)
      end
    end
not all photos may be present here (but we try to avoid one extra API call)
 if you want to get all the photos, try all_photos