Added = (Raw) node.

Fixes issue #357
better help patch for homography
Fixed IDiffSpread<MouseState>.IsChanged and IDiffSpread<KeyboardState>.IsChanged properties - included test patch.
Added help patch for new SendMouse/Keyboard nodes.
Added couple of null checks.
Added new StreamUtils.SpreadMax overload.
added Align, DrawVertexID modules, cosmetics to homography-help
Merge branch 'develop' of https://github.com/vvvv/vvvv into develop
PID (VVVV) sets output in constructor. fixes #527
created generic nodes project and moved base classes into it
Merge branch 'develop' of github.com:vvvv/vvvv into develop
Create README.md
helppatch updates
send/receive nodes now show their channel name by default (can be switched off via middleclick)
send/receive helppatch update
Merge branch 'develop' of https://github.com/vvvv/vvvv into develop
moved several generic node definitions from addonpack into GenericNodes project

added node templates for all generic nodes
moved CAR, CDR, Reverse and Shift from addonpack to GenericNodes project