code: function _cleanResults (results, stringify) {
    var clean = _.map(results, function (res) {
      return _.reduce(res, _cleanObject, {});
    });
    if (stringify) return JSON.stringify(clean, '', '  ');
    return clean;
  }
docs: /*
  Neo4j results cleaning functions
  strips RESTful data from cypher results
   creates a clean results which removes all non _data properties from nodes/rels