ice on/off driver file writer
updated path for new folder structure
fixed typo 1/3 vs 2/3
ice-on model
fixed error in NaN making its way through
model ice on w/ val data
files for all ice drivers
Merge branch 'master' of github.com:jread-usgs/WiLMA
write DoY for ice on/off:
mod to getZmean function to handle empty
format for on/off dates DoY to .tsv file
Merge pull request #6 from jread-usgs/master

Clean up on some typos for R methods, added ice on/off writer and supp files.