OK, so that means that I've fixed another problem then
In the demo you showed, player completely can't walk on walls.
I've fixed that as well as I've added smooth camera movement.
Sorry that I've misunderstood main problem.
I thought you can't make camera follow player.
Anyway, Jibbs solution works well. Just make an offset tilt for main one.
So here it is:
Download link
I move camera angles with key forces, change them as you like.