Merge https://github.com/fishjord/swc_msu into 2013-09-msu
Merge branch '2013-09-msu' of https://github.com/swcarpentry/boot-camps into 2013-09-msu
Merge branch '2013-09-msu' of https://github.com/swcarpentry/boot-camps into 2013-09-msu
added tutorial for debugging.