fix date string matching

change combine-data to check for old files

changing default parameters

Like grownups

clearer defaults

Merge pull request #4 from dannguyen/patch-1

added sample data output to README.md

Merge pull request #1 from keithw/cleanups

Add brief instructions about how to run the system

Include directories required for the script to generate output

Remove dependence on the authors' directory structure

Rename file (.r -> .R) for case-sensitive filesystems (e.g. Linux extN).

Leo lives

Initial commit