Notes to include in README

Since this repo is depended on the submoudle ros_can_drivers, after clonning clonning this repo, run git submodule init

To get lastest updates on ros_can_drivers simply run git submodule update --init --recursive

To push to ros_can_drivers git checkout (changes) git submodule update --remote --merge

for visualization (https://github.com/ANYbotics/grid_map) sudo apt-get install ros-$ROS_DISTRO-grid-map