[Sidebar] - add horizontal sidebar to the examples

[Zen Ninja Kat]

So that Horizontal Only Animations: Uncover Slide Along Slide Outare demo-able.

[Jack Lukic]

That should read "Vertical Only" referring to left or right. I'll revise now.

[Zen Ninja Kat]

I don't get it: what's the diff bw Uncover Slide Along Slide Out? They all loook the same here.

[Jack Lukic]

They are all different animations... Look carefully