remove old notebook
add updates to include model data
improvement to temporal bounding and required years, addition of histogram
add py file
Merge pull request #86 from birdage/add_wl_model_data

This notebook ran okay and produced output 
http://nbviewer.ipython.org/gist/rsignell-usgs/bea6c0fe00a7d6e3249c
so I'm merging.