ipython[nbconvert]
numpy >= 1.6
matplotlib
pandas
sphinx >= 1.3
sphinxcontrib-bibtex
sphinx_rtd_theme

ipython[nbconvert]
numpy >= 1.6
matplotlib
pandas
pydotplus
sphinx >= 1.3
sphinxcontrib-bibtex
sphinx_rtd_theme

Add pydotplus to doc build.
Add pydotplus to doc build.
