Collin Thornton
Collin Thornton
Added a few sentences about the `rclcpp::spin(node)` command in [section 1.3](https://industrial-training-master.readthedocs.io/en/foxy/_source/session1/ros2/3-Creating-a-ROS-Package-and-Node.html#). Included a link to the ROS2 docs concerning executors.
Added .rosinstall files to all solution work spaces explicitly used in the ROS basics training. The advanced courses look to be self sufficient, let me know if they need attention.
Removed redundant calls to `apt install gcc make` and `apt install build-essential` from the setup script.