title: Is there a way to make react-native ignore some files that not to bundle them?
body: <p>I already had a project which based on React for Web. And now, I created a React-Native project here. If I bundle with <code>react-native bundle</code>, react-native will bundle all my files then prompt lots of WARNING. So I want to make react-native ignore files under <code>/www</code>. </p>
  
  <p>I tried these actions, but useless:</p>
  
  <ol>
  <li>Add my paths to <code>sharedBlacklistWildcards</code> in <code>node_modules/react-native/packager/blacklist.js</code>.</li>
  <li>Add my paths to <code>.flowconfig</code>.</li>
  </ol>
  
  <p>I checked the documentation, but didn't find anything useful. How could I do that, or if I have a wrong idea?</p>