[DOC] Update README with reference to api docs
[DOC] Update README with reference to api docs

whotooktwarden/gatewayd,Parkjeahwan/awegeeks,Parkjeahwan/awegeeks,crazyquark/gatewayd,zealord/gatewayd,crazyquark/gatewayd,whotooktwarden/gatewayd,xdv/gatewayd,xdv/gatewayd,zealord/gatewayd