title: react native vector icons won't show in android device
body: <p>I used react-native-vector-icons in my react native project and start app with <code>npm start</code>.</p>
  <p>Icons are displaying normally in iOS, but won't show in android.</p>
  <p>Things I tried:</p>
  <ul>
  <li>three method in the doc of react-native-vector-icons (finally I can see *.tff files in the fonts folder)</li>
  <li>use <code>react-native run-android</code> to start app. Icon shows normal but what I want is integrating react native with my existing android app, not a totally RN app.</li>
  <li>use jsbundle file instead of debug server in my app</li>
  </ul>
  <p>None of above works</p>
  <p>So, should I add something to my existing android app?</p>
  <p>I don't know how to solve this problem</p>
  <hr />
  <pre><code>react@15.2.0
  
  react-native@0.30.0
  
  react-native-vector-icons@2.0.3
  
  node v5.10.1
  
  npm v3.8.3
  </code></pre>