added comment to the match function
render more intuitive app-id
linking up citation and fixing backrefs
rewrote README to be a bit clearer
fixed up patent stats function
modified integration files relevant to schema changes
foreignkeys > index and set up relationships
add configuration option to specify commit frequency for parse step
adjust database_commit method to use commit_frequency config option
unidecode requires unicode argument to avoid complaining (asthetic change)
Merge remote-tracking branch 'upstream/sqlalchemy' into sqlalchemy
use generator to get xml documents within file instead of regex
remove old regex
fix formatting in data XML file