added nodejs backend, changed/added some bits in helper files
Merge branch 'master' of https://github.com/mrquincle/rur-builder into origin
Added ability to combine backends, this needs changes in all backends (standard and nodejs done)
standard, nodejs, yarp should work now
Merge pull request #1 from vliedel/master

ability to combine different backends, works for standard, nodejs, yarp - breaks ros and zeromq