[yt-dev] Issue #638: Document IPython integration (yt_analysis/yt)

[Nathan Goldbaum]

New issue 638: Document IPython integration
https://bitbucket.org/yt_analysis/yt/issue/638/document-ipython-integration

Nathan Goldbaum:

There should be a section in the narrative docs that goes over yt's IPython integration.  Specifically, this should cover `imods`, `yt notebook`, and IPython pretty display for plots and volume renderings.