message: PanelHeader: addon iOS only comment
diff: @@ -13,6 +13,9 @@ export const baseClassNames = getClassName('PanelHeader');
  export default class PanelHeader extends React.Component {
  static propTypes = {
  left: PropTypes.node,
  + /**
  + * iOS only
  + */
  addon: PropTypes.node,
  right: PropTypes.node,
  children: PropTypes.node,
  