Control point update in user guide

[magister]

For the past few days, I've been using mconnect on both iPad and Android tablets with good success. It's now my second choice for a cp, displacing Linn Kinsky from that position, so it can be added to the list of those that are reported as working with MinimServer.

Speaking of Kinsky: if I understand correctly, it now requires an OpenHome renderer to work well. Perhaps a note should be added to that effect in the list of control points.