Simplify README_data.md

I rewrote this when I made the authanal repo. Is there any reason to still have the complicated version? I think all the old left-over JRL/development/production/etc. stuff just makes things confusing. Anything against this merge?
i think we can get rid of personal name all together; i never found this useful
$DATA/
     authorship/
             authorship_federalist/
                         raw/
                         processed/