Merge branch '2013-06-tufts' of https://github.com/ahmadia/boot-camps
syntax error in exercise-allsixframes
added main() to retrievegbk
Merge branch '2013-06-tufts' of https://github.com/ahmadia/boot-camps
Merge pull request #4 from wltrimbl/master

Post boot-camp bug fixes / markdown prettificaiton