CICE demonstration

... to come: Demonstration of how to use these tools in verification/scoring a run from one of the standard CICE Consortium runs.

Note: The demonstration run will be from one of the CICE Consortium JRA-55 experiments, which limits resolution to 1 degree, about 100 km. Some metrics, like ice edge rmse, will, therefore, not look very good. The purpose of the demonstration is to show how to use the tools more than to declare the model results to be good. The tools have been used down to 1/12th degree, tripolar, (approximately 3-5 km in the Arctic) -- they are not sensitive to model resolution.