Improve package with catkin_lint

[VictorLamoine]

Before

$ catkin_lint -W3 .
rviz_visual_tools: notice: target name 'imarker_simple_demo' might not be sufficiently unique
rviz_visual_tools: CMakeLists.txt(15): notice: list COMPONENTS should be sorted
rviz_visual_tools: CMakeLists.txt(35): notice: operands for operator VERSION_LESS should be quoted strings
rviz_visual_tools: CMakeLists.txt(54): notice: list CATKIN_DEPENDS should be sorted
rviz_visual_tools: CMakeLists.txt(86): notice: list of source files should be sorted
rviz_visual_tools: CMakeLists.txt(149): notice: list TARGETS should be sorted
rviz_visual_tools: CMakeLists.txt(173): notice: list TARGETS should be sorted
catkin_lint: checked 1 packages and found 7 problems

After

$ catkin_lint -W3 .
rviz_visual_tools: notice: target name 'imarker_simple_demo' might not be sufficiently unique
rviz_visual_tools: CMakeLists.txt(86): notice: list of source files should be sorted
rviz_visual_tools: CMakeLists.txt(173): notice: list TARGETS should be sorted
catkin_lint: checked 1 packages and found 3 problems

[davetcoleman]

Thanks!