Wrapped Node adds itself to Multifield of av::gua::Nodes stored in parend Node's user data
fixed bug in wrapped nodes children
reversed changes in picking example
merge
Add cmake script that searches for zmq.
Include find_zmq.cmake script
Merge branch 'feature/distribution' into avangong-buw
Swap lines for missplaced closing Parenthesis.
Remove AVANGO_ZMQ_DISTRIBUTION_SUPPORT flag.

Done with #17 .
Add zmw lib path.