docs: function objectMode( options, fcn ) {
  	var opts,
  		map;
  	if ( arguments.length > 1 ) {
  		opts = options;
  		map = fcn;
  	} else {
  		map = options;
  		opts = {};
  	}
  	opts.objectMode = true;
  	return new Stream( opts, map );
  }