Add v.App to examples

Please add an example of an App with a navigation drawer and AppBar to the example.ipynb.

I have tried to put something together. See below. But its not quite right yet. I can't work out how to get the content of the app to move when the navigation drawer is activated. Do you know how to fix this?

app = v.App(v_model=None)

navDrawer = v.NavigationDrawer(v_model=True, children=[
     v.Select(label='select1', items=[1,2,], prepend_icon = 'fa-truck'), 
    v.TextField(label='text', prepend_icon = 'mdi-heart'), 
    v.Select(label='select3', prepend_icon = 'mdi-magnify')
])
navDrawer.mini_variant = True
navDrawer.expand_on_hover = True

navDrawer.width =300
navDrawer.mini_variant_width = 30

toolBarButton = v.Btn(
                  icon = True, 
                  children=[
                      v.Icon(children=['mdi-dots-vertical'])
                      ]
               )

def on_click(widget, event, data):
   navDrawer.v_model = not navDrawer.v_model

toolBarButton.on_event('click', on_click)


randomButton = v.Btn(
                  icon = False, 
                  children=[
                      v.Icon(children=['mdi-heart']),
                      'Random Button...',
                      ]
               )

appBar = v.AppBar(
      color="deep-purple accent-4",
      dense=True,
      dark = True   ,  
       children = [
           toolBarButton, 
           v.ToolbarTitle(children=['App example']),
]
)

content = v.Container(
#         class_="fill-height",
#         fluid=False,
        children = [
         v.Row(
              align="center",
          justify="center",
#     class_="fill-height",
#         fluid=False,
            children = [randomButton]
                     )
        ])

app.children = [appBar,navDrawer,content]
app

Start with the requested example.ipynb and the supplied App, NavigationDrawer, AppBar, and content setup. Run the notebook and inspect how the drawer activation affects the content; done means the notebook contains a working navigation-drawer example whose content moves correctly when the drawer is activated.