title: The import org.andengine.BuildConfig cannot be resolved, can't install AndEngine
body: <p>I have a problem with instalation AndEngine GLS2, this row</p>
  
  <pre><code>   import org.andengine.BuildConfig;
  </code></pre>
  
  <p>show mistake "import org.andengine.BuildConfig;" I read forums but there wrotte that:
  for last AndEngine GLS2 u need ADT 17. But I use last ADT 21, but nevertheless it shows this mistake can you say me how to fix it?</p>