:param options: dictionary containing the options
        :returns: option_string formatted for an API endpoint

def _build_option_string(self, options):
        """
        :param options: dictionary containing the options
        :returns: option_string formatted for an API endpoint
        """
        option_string = ""
        if options is not None:
            for key in options:
                option_string += "/%s-%s" % (key, options[key])
        return self._quote_url(option_string)