Closes #21
Merge branch 'issue21' into devel
Must subset the mesh.  Closes #24.

2400x2400 seems to be too much for pcolormesh, subsetting to 1200x1200
seems to work, though.
Merge branch 'issue24' into devel
Closes #23
Instructions for gdal setup in python3.  Closes #26
Merge branch 'issue26' into devel
Completed NSIDC/MODIS examples.
Merge branch 'issue25' into devel
Any figure windows are closed upon completion of a test.  Closes #27
Merge branch 'issue27' into devel
Fixed run instructions in docstrings.  Closes #29.

Added test to verify that the correct instructions to run each script
are properly stated.
Merge branch 'issue29' into devel
Added NSIDC/NISE grid examples.
Merge branch 'issue33' into devel
Added LAADS/VIIRS grid example.  Closes #35
Merge branch 'issue35' into devel
Merge branch 'devel'