Example with react-navigation

[guizmo]

This example is with react-navigation but it doesn't wrap the modal inside the router.

P.S: there is a "settimeout" in the destroy function because of a warning thrown while un-mounting the component... maybe there is a better way

[jeremybarbet]

Thanks for the pull request!

I won't merge this pull request, but I'm using your code to move it on my branch since I'm using typescript everywhere and try to share all the modals codes between the different examples.

The only difference with your code is I won't use mobx, I would like an example as dependency-free as possible. Anyway thanks for the contribution, moving the modal around the app navigator is probably the best way to do it 👍🏻

Cf: There is still a discussion open on the react-navigation repository to find the best way to handle overlays: react-navigation/rfcs#15

[jeremybarbet]

I just merged the pull request with all the examples. Thanks for the help 👌🏻