Added ros init() for ROSCameraObserver to be used.
Added ros init() for ROSCameraObserver to be used.

ros-industrial/industrial_calibration,ros-industrial/industrial_calibration,ros-industrial/industrial_calibration,akgoins/industrial_calibration,drchrislewis/industrial_calibration,ros-industrial/industrial_calibration,drchrislewis/industrial_calibration,akgoins/industrial_calibration,drchrislewis/industrial_calibration,akgoins/industrial_calibration,drchrislewis/industrial_calibration