Adds 5.1 checks
Adds two-dim checks
Adds proper grid and rhgrid checks
Adds a utility to graph relationships between NC file objects
Added recursive print formatting.  Reworked code around recursive print routine.
Made changes requested through git pull request.
Merge pull request #6 from DanielJMaher/command_line_and_print_formatting

Added recursive print formatting.  Reworked code around recursive print ...
Merge pull request #5 from asascience-open/chap5

CF Chapter 5 Checks
Work In Progress IOOS data checker.
Big internal refactor to support SOS endpoints
Packaging
Update to use packaged data
Move CF utils into package spec
ignore python package files
WIP IOOS checker rework
Better dataset/sos loader
Merge pull request #8 from asascience-open/iooscheck

IOOS Checker
Disabled udunits for now
Use declare_namespace
More correct way of doing namespace packages?