Exercise

Create notification menus

You can also create a notification drop down menu on your header. This allows you to notify your user of something. Add a notification that the International Space Station is overhead.

Instructions

100 XP

Create a drop down menu of type notifications and create a notification item.
Add text to your notification item letting the viewer know "The International Space Station is overhead!".
Set the new header in the dashboardPage().
Rerun the shiny app with these updates.