Making it possible to add Custom Hardware to the HardwareInterface easily without having to fork all the pr2 repos - see shadow-robot/sr-ronex-dev#1
deleting the CustomHWState and CustomHWCommand as agreed in discussion
Merge pull request #315 from shadow-robot/F_custom_hardware

Making it possible to add Custom Hardware to the HardwareInterface
Merge remote-tracking branch 'origin/master' into hydro-devel