Started DEVELOP.md with a glossary
Started DEVELOP.md with a glossary

Started a development doc with a few glossary terms.

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