updates to rc and scaling for docs to get nice sizes for html and pdf
added some static figures
remove a stray print statement from plot_directive
don't link to example scripts to generate documentation figures
Fix formatting typo affecting case where include-source is False.
moved figure autogen into plot directive
fixed URL in drawlsmask docstring.
more work on docstrings.
updated documentation guide to include Mike's plot directive
updating docstrings
