Merge pull request #91 from kwilcox/s3a

Updates to Scenario 3A and a move to the new folder structure
Create Theme_1_Baseline
Update Theme_1_Baseline
Update Theme_1_Baseline
Update Theme_1_Baseline
Update Theme_1_Baseline
Update Theme_1_Baseline
Delete Theme_1_Baseline
Three Sample notebooks for Baseline.

These are very basic attempts at testing the availability of records
using ontologies and IOOS Core variable terms, model indicator strings,
and agency strings.
new files
Using `iris.FUTURE.netcdf_promote` to load sea level data as cube.
Uncommented the modification.
Merge pull request #97 from ocefpaf/new_iris_syntax

Using `iris.FUTURE.netcdf_promote` to load sea level data as cube.  Fixes #54
Merge pull request #92 from hdean83/Theme_1_Baseline

Three Sample notebooks for Baseline.
Theme 2 Scenario A Extreme Water Level

- Add model data using iris
Update README and requirements
Merge pull request #99 from Bobfrat/extreme_inundation

Theme 2 Scenario A Extreme Water Level
Updates to Scenario 3A