'Make ``username``\'s membership in this organization public.
:param str username: the name of the user whose membership you wish to
publicize
:returns: bool'

@requires_auth
def publicize_member(self, username):

    url = self._build_url(u'public_members', username, base_url=self._api)
    return self._boolean(self._put(url), 204, 404)
