Minor bug fixes, update to 5.1
Improve get_bathy to check for local unarchived files
Update makefiles
Add Hurricane Karen example
Update New York hurricane examples
Merge pull request #33 from mandli/update-stormsurge-5.1

Update storm surge apps to planned 5.2 release
Fix fgmax interpolate function reference
Merge pull request #34 from mandli/fgmax-interpolate-bug

Fix fgmax interpolate function reference
Add riemann solver animation notebook.
Merge pull request #37 from ketch/riemann_notebook

Add riemann solver animation notebook.