Converted flow_control and functions_and_modules notebooks from v2 to v3.
Merge branch '2013-06-chicago' of https://github.com/swcarpentry/boot-camps into 2013-06-chicago
Reorganized repo such that each folder corresponds to one lecture and they are numbered sequentially with a 2-digit number (attempt 2).
Merge pull request #136 from jdblischak/2013-06-chicago

Reorganized the directory structure.