Update installing.rst
Update installing.rst
rhaschke/catkin_tools,scpeters/catkin_tools,scpeters/catkin_tools,rhaschke/catkin_tools,iwanders/catkin_tools,rhaschke/catkin_tools,scpeters/catkin_tools,iwanders/catkin_tools,scpeters/catkin_tools,catkin/catkin_tools,iwanders/catkin_tools,catkin/catkin_tools,catkin/catkin_tools,catkin/catkin_tools,iwanders/catkin_tools