- took out extraneous code & comments to make the script simpler to   review/grade - modified comments to reflect proper width of features table(s) - learned that stop(), not return() is what i need to stop execution on error
- took out extraneous code & comments to make the script simpler to
  review/grade
- modified comments to reflect proper width of features table(s)
- learned that stop(), not return() is what i need to stop execution on error

trjh/datascience-getclean