def url_for(type, image_path)
      types =  ["backdrop", "logo", "poster", "profile"]
      raise ArgumentError.new("type must be one of #{types}") unless types.include?(type)
      return [] if image_path.nil? || image_path.empty? && valid?

      send("#{type}_sizes").map do |size|
        "#{base_url}#{size}#{image_path}"
      end
    end
def url_for(type, image_path)
      types =  ["backdrop", "logo", "poster", "profile"]
      raise ArgumentError.new("type must be one of #{types}") unless types.include?(type)
      return [] if image_path.nil? || image_path.empty? && valid?

      send("#{type}_sizes").map do |size|
        "#{base_url}#{size}#{image_path}"
      end
    end
Returns an array of strings containing URL's for movie/person/tv assets.
 Be aware to setup the configuration beforehand, by running:

   Enceladus::Configuration::Image.instance.setup!

 The following arguments are necessary:
 - type: the type of asset you're providing, must be one of "backdrop", "logo", "poster" or "profile".
 - image_path: /gWyevEz9NT5tON6kdhxsmfvdJ40.jpg

 Examples:

   Enceladus::Configuration::Image.instance.url_for("backdrop", )
   => ["http://image.tmdb.org/t/p/w300/gWyevEz9NT5tON6kdhxsmfvdJ40.jpg", "http://image.tmdb.org/t/p/w780/gWyevEz9NT5tON6kdhxsmfvdJ40.jpg", "http://image.tmdb.org/t/p/w1280/gWyevEz9NT5tON6kdhxsmfvdJ40.jpg", "http://image.tmdb.org/t/p/original/gWyevEz9NT5tON6kdhxsmfvdJ40.jpg"]