title: error: <identifier> expected with package com.native
body: <p>I followed <a href="https://facebook.github.io/react-native/docs/android-setup.html">this instructions</a> to setup android requirements and initiate a project with <em>react-native</em>. When I try to run the application using the command <code>react-native run-android</code>, it keeps showing this error then exiting the process.</p>
  
  <pre><code>/path/to/native/android/app/src/main/java/com/native/MainActivity.java:1: error: &lt;identifier&gt; expected
  package com.native;
              ^
  </code></pre>