Multiple Youbot ROS Setup

To avoid conflicting names when publishing topics from different youbots, the youbot_oodl or youbot_driver launch files need to be edited, and the name of the youbot (e.g. youbot_1) written before all topic titles. (e.g. <param name="youbot_2/youBotHasBase" ...)

Also needs to be added: <node ns="youbot_2" name="youbot_driver" ...