Set data for an image mentioned in the template.

        @param identifier: Identifier of the image; refer to the image in the
        template by setting "py3o.[identifier]" as the name of that image.
        @type identifier: string

        @param path: Image path on the file system
        @type path: string

def set_image_path(self, identifier, path):
        """Set data for an image mentioned in the template.

        @param identifier: Identifier of the image; refer to the image in the
        template by setting "py3o.[identifier]" as the name of that image.
        @type identifier: string

        @param path: Image path on the file system
        @type path: string
        """

        f = open(path, 'rb')
        self.set_image_data(identifier, f.read())
        f.close()