Activityconfig doc

I checked in my sample activity json and also @ysahnpark 's  example based on my sample for Kantorowski.

I did this so it would be easier to view changes. Because I added another hookupActions section to do some of the work in a more generic way that Young Suk had added to the configFixup section.

Young Suk's example does show where a lot more work is needed to really get this working.