remove mentions to pylab in favor of matplotlib=inline
use pyplot as plt in plot-catalog
yay, runipy already merged my change!  --matplotlib=inline instead of
--pylab in runipy
Merge pull request #47 from keflavich/nopylab

Don't use pylab
split README into README + CONTRIBUTING
word wrap
Merge pull request #48 from keflavich/split_readme_contributing

Split README into README + CONTRIBUTING
Convert UVES tutorial to ipython notebook format
Use download_file function to downlaod tar file  with UVES data
Replace :ref: and :math: markup syntax
Replace sphinx math markup