[Untested/debugged/broken] Initial Simulator work for Node->Node connections.
[Untested/debugged/broken] Initial Simulator work for Node->Node connections.

ctn-archive/nengo_spinnaker_2014,ctn-archive/nengo_spinnaker_2014,ctn-archive/nengo_spinnaker_2014,ctn-archive/nengo_spinnaker_2014