started US bills longtail
added perl module for bills longtail
updated {download,parse}.sh to read all congresses

beware, data download now 114M
wrap data in CDATA elements, check for null values
create data directory if it doesn't exit
link to specific govtrack fulltext documents
remove xml wrapper and output to output.xml
use govtrack.us links instead of fulltext doc as source
remove new line from link and add <br> after summaries
add back </doc> >:-(
better error handling