Add instructions to get Notifications working on Win 10 Update (#16326)

Fails silently and was frustratingly hard to know why. Hope this save a lot of people some time.

docs/tutorial/notifications.md

@@ -23,9 +23,8 @@ While code and user experience across operating systems are similar, there
 are subtle differences.
 
 ## Windows
-
 * On Windows 10, a shortcut to your app with an [Application User
-Model ID][app-user-model-id] must be installed to the Start Menu.
+Model ID][app-user-model-id] must be installed to the Start Menu. This can be overkill during development, so adding `node_modules\electron\dist\electron.exe` to your Start Menu also does the trick. Navigate to the file in Explorer, right-click and 'Pin to Start Menu'. You will then need to add the line `app.setAppUserModelId(process.execPath)` to your main process to see notifications.
 * On Windows 8.1 and Windows 8, a shortcut to your app with an [Application User
 Model ID][app-user-model-id] must be installed to the Start screen. Note,
 however, that it does not need to be pinned to the Start screen.
@@ -97,4 +96,4 @@ GNOME, KDE.
 [notification-spec]: https://developer.gnome.org/notification-spec/
 [app-user-model-id]: https://msdn.microsoft.com/en-us/library/windows/desktop/dd378459(v=vs.85).aspx
 [set-app-user-model-id]: ../api/app.md#appsetappusermodelidid-windows
-[squirrel-events]: https://github.com/electron/windows-installer/blob/master/README.md#handling-squirrel-events
+[squirrel-events]: https://github.com/electron/windows-installer/blob/master/README.md#handling-squirrel-events