code: function plugin(opts){
    var obj = {};
    try {
      var content = fs.readFileSync('./package.json', { encoding: 'utf8' });
      obj = JSON.parse(content);
    }
    catch (e) {
      // There was an error reading package.json, so do nothing about it.
    }
  
    return function(files, metalsmith, done){
      var metadata = metalsmith.metadata();
  
      // Load in the local package.json if it's available.
      var localPackage = {};
      if (files['package.json']) {
        localPackage = JSON.parse(files['package.json'].contents.toString());
        // It is now read in, so delete it.
        delete files['package.json'];
      }
  
      // Merge the local package.json into the application's package.json.
      metadata['pkg'] = extend({}, obj, localPackage);
      done();
    };
  }
docs: Metalsmith plugin to hide drafts from the output.
  
  @param {Object} opts
  @return {Function}