Closes #78

	modified:   pandora_vision_hole_detector/include/hole_fusion_node/hole_fusion.h
	new file:   pandora_vision_hole_detector/include/hole_fusion_node/hole_validation.h
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/CMakeLists.txt
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/hole_fusion.cpp
	new file:   pandora_vision_hole_detector/src/hole_fusion_node/hole_validation.cpp