Regarding http://stackoverflow.com/questions/36620075/

demo.jsx

import { render } from 'react-dom';
import { Router, Route, Link, browserHistory, IndexRoute } from 'react-router'

class LangList extends React.Component {
  render() {
    return (
      <div>LangList</div>
    )
  }
}

class LangItem extends React.Component {
  render() {
    return (
      <div>LangItem</div>
    )
  }
}

class AdminApp extends React.Component {
    render() {
        return (
            <div>
                <h1>App</h1>
                <ul>
                    <li><Link to="/">About</Link></li>
                    <li><Link to="/wtf">Inbox</Link></li>
                </ul>

                {this.props.children}
            </div>
        );
    }
}

function exec() {
  render(
    <Router history={browserHistory}>
        <Route path="/" component={AdminApp}>
            <IndexRoute component={LangList} />
            <Route path="wtf" component={LangItem} />
        </Route>
    </Router>
    ,
    document.getElementById('app'),
  );
}

exec();

package.json

  (...)
  "dependencies": {
    "autoprefixer": "^6.3.6",
    "babel": "^6.5.2",
    "babel-loader": "^6.2.4",
    "babel-polyfill": "^6.7.4",
    "babel-preset-es2015": "^6.6.0",
    "babel-preset-react": "^6.5.0",
    "babel-preset-stage-0": "^6.5.0",
    "css-loader": "^0.23.1",
    "extract-text-webpack-plugin": "^1.0.1",
    "file-loader": "^0.8.5",
    "node-sass": "^3.4.2",
    "postcss-loader": "^0.8.2",
    "react-dom": "^0.14.8",
    "react-router": "^2.0.1",
    "sass-loader": "^3.2.0",
    "semantic-ui-css": "^2.1.8",
    "style-loader": "^0.13.1",
    "webpack": "^1.12.14",
    "react-router": "^2.2.2"
  }
  (...)