title: Cannot Resolve import android.support.multidex.MultiDex after change to newest Multidex
body: <p>I want to use multidex in my application, At First I used depedencies :
  <code>'com.google.android:multidex:0.1'</code>, but after compile this error appeared :</p>
  
  <blockquote>
    <p>Error:Execution failed for task ':packageAllDebugClassesForMultiDex'.</p>
    
    <blockquote>
      <p>java.util.zip.ZipException: duplicate entry: android/support/multidex/BuildConfig.class</p>
    </blockquote>
  </blockquote>
  
  <p>then I changed <code>'com.google.android:multidex:0.1'</code> to <code>'com.android.support:multidex:1.0.1'</code>, but after that <code>import android.support.multidex.MultiDex;</code> in application class cannot be resolved, anybody can help ?</p>