Add to .gitignore items generated by contrib/non-profit-audit-reports/demo.sh
Add to .gitignore items generated by contrib/non-profit-audit-reports/demo.sh

duncanmortimer/ledger,paulbdavis/ledger,afh/ledger,duncanmortimer/ledger,paulbdavis/ledger,duncanmortimer/ledger,jwakely/ledger,afh/ledger,paulbdavis/ledger,duncanmortimer/ledger,duncanmortimer/ledger,paulbdavis/ledger,jwakely/ledger,paulbdavis/ledger,ledger/ledger,ledger/ledger,ledger/ledger,paulbdavis/ledger,ledger/ledger,jwakely/ledger,afh/ledger,duncanmortimer/ledger,duncanmortimer/ledger,jwakely/ledger,jwakely/ledger,jwakely/ledger,afh/ledger,jwakely/ledger,afh/ledger,ledger/ledger,paulbdavis/ledger