Fixes path to data file and removes reference to unknown script bathy_text.py
Merge branch 'zszuts-master'

Adds notebook covering colomaps, bathymetry plots, and contourf
* zszuts-master:
  Fixes path to data file and removes reference to unknown script bathy_text.py
  Notebook for plotting bathymetry with contourf
  bathymetric data for contourf example
pruning new changes from my tree