CONTENTS of the repository:

* README                    the README file with all important information
* COPYING.MIT               MIT license
* conf/layer.conf           configuration file for this layer
* classes/catkin.bbclass    class for catkin-based packages
* recipes-core/images       recipes of images for using ROS
* recipes-devtools          recipes of system prerequisites of ROS
* recipes-ros               recipes for cross-compiling ROS packages