Add easter egg comment for Sublime Text 2 users

Test Plan:
1. Fixed Sublime Text settings, per http://stackoverflow.com/questions/13210816/sublime-texts-syntax-highlighting-of-regexes-in-python-leaks-into-surrounding-c
2. Watched everything turn from purple to the color it should be
3. Also, the "Jump to function" operation works now

Auditors: davidbieber