Update CONTRIBUTING.md
Update CONTRIBUTING.md
thijstriemstra/ccxt,thijstriemstra/ccxt,aiueogawa/ccxt,aiueogawa/ccxt,tritoanst/ccxt,ccxt/ccxt,ccxt/ccxt,tritoanst/ccxt,tritoanst/ccxt,aiueogawa/ccxt,aiueogawa/ccxt,ccxt/ccxt,ccxt/ccxt,thijstriemstra/ccxt,ccxt/ccxt,tritoanst/ccxt,thijstriemstra/ccxt