Added IPython Notebook support
import fix
python 3 print compatibility
Merge pull request #34 from tnt/master

Changes to the doc examples I complained about
add tnt to Contributors file
Merge pull request #33 from jdavidheiser/master

Added IPython Notebook support
add @jdavidheiser & @fdeheeger to Contributors file
pep fixes in ipython notebook file + add Notebook support in Readme
restored old sreenshot/discreteBarChart.png which I had accidently overridden with https://github.com/areski/python-nvd3/blob/.../discreteBarChart.png instead of https://github.com/areski/python-nvd3/raw/.../discreteBarChart.png