Modal and layers

First, thanks for the library! Good work!

Looking at your code, it seems that you implement modal dialogs by rendering them in the DOM and showing or hiding them. This does seem to be the Angular / Foundation for Apps way.

However, in React modals should use layers to render them on demand.

See:

https://github.com/facebook/react/issues/379

and (the solution)

https://github.com/pieterv/react-layers

What do you think?

Peter