message: Removed unsafe compiler warning from cast
diff: @@ -30,6 +30,7 @@ public class SceneActivity extends Activity implements DefaultHardwareBackBtnHan
  Bundle props = new Bundle();
  props.putInt("crumb", getIntent().getIntExtra(CRUMB, 0));
  String appKey = getIntent().getStringExtra(APP_KEY);
  + @SuppressWarnings("unchecked")
  HashSet<String> sharedElements = (HashSet<String>) getIntent().getSerializableExtra(SHARED_ELEMENTS);
  mReactRootView.startReactApplication(getReactNativeHost().getReactInstanceManager(), appKey, props);
  setContentView(mReactRootView);
  