Intergrate with other bottom navigation bar.

[Zony-Zhao]

I want to intergrate with other bottom navigation bar with fancy animations. I wonder whether this lib could give a thin wrapper of the hide/show on scrolling functionality, and provide a property as child (Widget) instead of items(Widget[]).

[pishguy]

@Zony-Zhao i do it simply, you can only change default bottom navigation when you download source of this library and change that handly