scout_description 0.4.2 AgileX Scout Husky URDF description Ryan Gariepy Prasenjit Mukherjee Mike Purvis Paul Bovbel Devon Ash Paul Bovbel Tony Baltovski http://ros.org/wiki/scout_description https://github.com/husky/husky/issues https://github.com/husky/husky BSD catkin roslaunch urdf xacro lms1xx