SDK Simplified connection string in app.config: "Object reference not set to an instance of an object."

Greetings:

I'm trying the examples in the SDK, and now I'm at the Simplified Connecting String Example listed here [https://msdn.microsoft.com/en-us/library/jj602970(v=crm.7).aspx]

This is my code in the app.config:

<add name="Server=CRM Online, organization=contoso, user=someone"
         connectionString="Url=https://pspas.crm.dynamics.com;
         Username=nxxxx.mxxxz@pspas.onmicrosoft.com;
         Password=xxxx; 
         authtype=Office365"/> 

However, I'm receiving the following error:

I'm using VS 2015 and I'm trying to connect to CRM Online 2016.

What I'm missing in my connection string?