code: function noformat(app, file, locals, argv) {
    return app.isTrue('noformat') || app.isFalse('format')
      || file.noformat === true || file.format === false
      || locals.noformat === true || locals.format === false
      || argv.noformat === true || argv.format === false;
  }
docs: Push the `file` through if the user has specfied
  not to format it.