* Add ExpandableLayout by skydoves in README.md
Because there is another ExpandableLayout lib with the same name that has already been listed so I had to add postfix "by skydoves" (author's Github name) for this one's name.
* Add ExpandableLayout by skydoves in pages/layout
* add GIFs for Expandable Layout by skydoves
Co-authored-by: Bravo <Huynh.Tinh@legato.co>
Co-authored-by: Pierrick Greze <pierrick.greze@gmail.com>
