docs: function stringDiff(existing, proposed, method) {
    method = method || 'diffJson';
    lazy.diff[method](existing, proposed).forEach(function (res) {
      var color = utils.gray;
      if (res.added) color = utils.green;
      if (res.removed) color = utils.red;
      process.stdout.write(color(res.value));
    });
    console.log('\n');
  }