in vote XML output, map Guilty and Not Guilty to +/- option keys for compatibility with GovTrack data
in vote XML output, map Guilty and Not Guilty to +/- option keys for compatibility with GovTrack data

sunlightlabs/congress-opencongress,Nolawee/congress,boblannon/congress,unitedstates/congress,boblannon/congress,chriscondon/billtext,unitedstates/congress,chriscondon/billtext,sunlightlabs/congress-opencongress,Nolawee/congress