title: react-router match query string
body: <p><a href="https://github.com/reactjs/react-router/example" rel="nofollow">https://github.com/reactjs/react-router/example</a></p>
  
  <p>I tried the example on <code>npm start</code></p>
  
  <p>query string match to route is not working on the example.
  When I click the second one, It's activating wrong one </p>
  
  <p><a href="http://localhost:8080/query-params/user/bob?showAge=1" rel="nofollow">http://localhost:8080/query-params/user/bob?showAge=1</a>
  and refreshing on the link above not matching any routes.</p>
  
  <p>Even if I have change the example code to below
  <code>
        &lt;Route path="user/:userID(?:showAge)" component={User} /&gt;
  </code>
  I tried couple of things that might work based on docs but none of them worked.</p>
  
  <p>Am I missing something?</p>