message: Added hide prop to NavigationBar
  It's come across because prop is there for BottomAppBar so makes sense to give it meaning for the navigation bar
diff: @@ -42,6 +42,11 @@ public class NavigationBarManager extends ViewGroupManager<NavigationBarView> {
  }
  }
  + @ReactProp(name = "hide")
  + public void setHide(NavigationBarView view, boolean hide) {
  + view.setExpanded(!hide, true);
  + }
  +
  @ReactProp(name = "height")
  public void setHeight(NavigationBarView view, double height) {
  view.getLayoutParams().height = height != 0 ? (int) PixelUtil.toPixelFromDIP(height) : AppBarLayout.LayoutParams.WRAP_CONTENT;
  