title: Didn't find class org.cocos2dx.cpp.AppActivity
body: <p>Cocos2d-x version 3 problems running Android test application.</p>
  
  <p>I've followed the instructions how to create a new project using the cocos.py script.
  This works fine. Then I follow the instructions running build_native.py. Import the Android test application to Eclipse. When I try to run it on a device I get.</p>
  
  <p>05-09 10:54:42.363: E/AndroidRuntime(18170): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.mycompany.testAndroid/org.cocos2dx.cpp.AppActivity}: java.lang.ClassNotFoundException: Didn't find class "org.cocos2dx.cpp.AppActivity" on path: DexPathList[[zip file "/data/app/com.mycompany.testAndroid-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.mycompany.testAndroid-1, /vendor/lib, /system/lib]]</p>
  
  <p>Any ideas how to fix this problem?</p>