message: Added contentDescription prop to extended fab
  Not sure it's necessary because there's a text element. But it can be shrunk so maybe it is. Anyway, added for consistency and
diff: @@ -137,6 +137,11 @@ public class ExtendedFloatingActionButtonManager extends SimpleViewManager<Exten
  view.setFontSize(fontSize);
  }
  + @ReactProp(name = "contentDescription")
  + public void setContentDescription(ExtendedFloatingActionButtonView view, String contentDescription) {
  + view.setContentDescription(contentDescription);
  + }
  +
  @ReactProp(name = "testID")
  public void setTestID(ExtendedFloatingActionButtonView view, String testID) {
  view.setTag(testID);
  