code: function irishPub(root) {
    root = root || process.cwd();
  
    var out = new PassThrough();
  
    getMetadata(root, function(err, meta) {
      if (err) return out.emit('error', err);
      out.emit('metadata', meta);
      listFiles(root, out);
    });
    return out;
  }
docs: Invokes `npm pack` to determine what would be included during `npm publish`.
  
  @name irishPub
  @function
  @param {string} root path to package to publish, defaults to `cwd`
  @return {ReadableStream} stream that emits all files with paths relative to `root` that will be packed via the `data` event