ch02 usa.gov bit.ly example ipython notebook.

http://nbviewer.ipython.org/urls/raw.github.com/lexual/pydata-book/55b45f987dd6b9502f30f1a0d446e2c206e0309d/ch02_usa_gov_bitly.ipynb

ipython notebook of first example in ch02, bit.ly usa.gov data.