title: React native Image variable in name doesn't work
body: <p>I'm trying to load an image that has a variable in it's source, something like this.</p>
  
  <pre><code>&lt;View&gt;
    {_.map(this.state.ambiences, (id) =&gt; {
      var image = require('../../assets/img/ambiances/icons/' + label + '.png'); // variable label equals "chic" here
      var image2 = require('../../assets/img/ambiances/icons/chic.png');
      return &lt;Image style={styles.pastilleOverlay} source={image} /&gt;;
    })}
  &lt;/View&gt;
  </code></pre>
  
  <p>I get the following error (thrown when trying to set variable image) : Requiring unknown module "../../assets/img/ambiances/icons/chic.png"</p>
  
  <p>If I comment the <code>var image = ...</code> line, it works fine with <code>source={image2}</code> in the Image tag.</p>
  
  <p>I checked, both strings in the are exactly the same. Any ideas ?</p>