code: function(pattern, options) {
        this.emit('read');
        this.setPattern(pattern, options);
        var res = this.iteratorStream(this.pattern.base);
        this.emit('end', this.files);
        return res;
      }
docs: Stream files or directories that match the given glob `pattern`.
  
  ```js
  var glob = require('glob-fs')({ gitignore: true });
  
  glob.readdirStream('*.js')
  .on('data', function (file) {
  console.log(file.path);
  })
  .on('error', console.error)
  .on('end', function () {
  console.log('end');
  });
  ```
  
  @name .readdirStream
  @param  {String} `pattern` Glob pattern
  @param  {Object} `options`
  @returns {Stream}
  @api public