title: Why 'react-router-dom' showing 'Cannot GET'
body: <p>I've created simple web-application and try to hook up <code>react-router-dom</code>, when I launch application, it's showing component <code>Audience</code>(url: <code>localhost:3000</code>), but if I change url to <code>localhost:3000/board</code> or <code>localhost:3000/speaker</code> it show <code>Cannot GET /board</code> or <code>Cannot GET /speaker</code></p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="true">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>import React from 'react';
  import ReactDOM from 'react-dom';
  import { BrowserRouter as Router, Route, Link } from 'react-router-dom'
  
  import Audience from './components/Audience.jsx';
  import Board from './components/Board.jsx';
  import Speaker from './components/Speaker.jsx';
  
  ReactDOM.render(
  &lt;Router&gt;
    &lt;div&gt;
      &lt;Route path="/" component={Audience}/&gt;
      &lt;Route path="/board" component={Board}/&gt;
      &lt;Route path="/speaker" component={Speaker}/&gt;
    &lt;/div&gt;
  &lt;/Router&gt;, document.getElementById('root'))</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"&gt;&lt;/script&gt;
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"&gt;&lt;/script&gt;
  
  &lt;div id="root"&gt;&lt;div&gt;</code></pre>
  </div>
  </div>
  </p>