Edit in JSFiddle

const router = (
    <Router history={browserHistory}>
        <Route path="/" component={App}>
            <IndexRoute component={StartScreen}></IndexRoute>
            <Route path="/useless" component={Useless}></Route>
            <Route path="/clickable" component={Clickable}></Route>
        </Route>
    </Router>
)

render(router, document.getElementById('root'));