Readme needs a tweak

[425BigData]

Step 7 in Register the client app (TodoListClient-Headless) can be removed. With the Native app type there appears to be no App ID URI in the properties panel. I think the URI is correctly updated in Step 3.

[jmprieur]

Thanks @425BigData.
Indeed, the property appears when opening the blade, but it's now made invisible (because not needed). I've removed this step (752c4f3)