Spin naar SpinOnce veranderd in rviz object en gripper
Merge branch 'master' of https://github.com/svanschooten/Grijper

Conflicts:
	src/rviz_gripper.cpp
	src/rviz_object.cpp
Merge branch 'master' of https://github.com/svanschooten/Grijper
rviz_gripper updated