React Router의 핸들러 구성 요소에 소품을 어떻게 전달할 수 있나요?

var Dashboard = require('./Dashboard');
var Comments = require('./Comments');

var Index = React.createClass({
  render: function () {
    return (
        <div>
            <header>Some header</header>
            <RouteHandler />
        </div>
    );
  }
});

var routes = (
  <Route path="/" handler={Index}>
    <Route path="comments" handler={Comments}/>
    <DefaultRoute handler={Dashboard}/>
  </Route>
);

ReactRouter.run(routes, function (Handler) {
  React.render(<Handler/>, document.body);
});

<Comments myprop="value" />

var RoutedComments = React.createClass({
  render: function () {
    return <Comments {...this.props} myprop="value" />;
  }
});

<Route path="comments" handler={RoutedComments}/>

class Index extends React.Component {
  constructor(props) {
    super(props);
  }
  render() {
    return (
      <h1>
        Index - {this.props.route.foo}
      </h1>
    );
  }
}

var routes = (
  <Route path="/" foo="bar" component={Index}/>
);