Added new robot descriptions for Robotoid

mg_navigation/src/mg_navigation.cpp

@@ -51,7 +51,7 @@ namespace mg {
 
         path_buffer_ = std::make_shared<PathBuffer>(this);
 
-        pub_twist = create_publisher<Geometry::TwistStamped>("diffdrive_controller/cmd_vel", 2);
+        pub_twist = create_publisher<Geometry::TwistStamped>("/cmd_vel", 2);
 
         obstacle_manager_ = std::make_shared<ObstacleManager>(this, tf2_buffer);