Add toggle drawer to the Readme

[haikyuu]

Provide a short explanation on how to toggle the drawer, and provide a simple example.

[sibelius]

I would like to put this doc inside a recipe much like avajs docs (https://github.com/avajs/ava#recipes)

what do u think?

[haikyuu]

Yes that would be nice, and it would help with writing the docs one recipe at a time.

I have run into another issue with drawer, i am using a stack navigation like this:

<NavigationProvider context={navigationContext}>
  <StackNavigation initialRoute={router.getRoute('home')}
    defaultRouteConfig={{
      navigationBar: navigationBar,
    }}
   />
</NavigationProvider>

And one of the routes defined in the router is The DrawerLayout. But when i want to toggle the drawer, it gives me Navigator does not exist. What do you think is the problem?

[sibelius]

I think u should try this: https://gist.github.com/knowbody/ce483742a1761658b767428a0ed35147#modals

to have a top level navigation

[sibelius]

added to recipes - https://github.com/sibelius/ex-navigation-recipes/blob/master/recipes/NavigationBarMenuButton.md