demos/contrib/test_cf_ugrid3.m: Update URIs and use ncvariable-style data access for face_node_connectivity data.
demos/contrib/comp_ngulf_tseries.m: Use ncvariable-style data access for face_node_connectivity data.
Merge pull request #40 from drf5n/uris

demos/contrib/test_cf_ugrid3.m: Update URIs and use ncvariable-style dat...