clarify README
clarify README

eordano/bitcore,bankonme/bitcore,martindale/fullnode,ryanxcharles/fullnode,TOMOAKI12345/bitcore,MonetaryUnit/bitcore,iobond/bitcore,bitjson/bitcore,bitjson/bitcore,pnagurny/bitcore,maraoz/coinforge,GroestlCoin/groestlcore,reddit/fullnode,iobond/bitcore,genecyber/bitcore,bankonme/bitcore,bitpay/bitcore,litecoin-project/litecore,janko33bd/bitcore,eXcomm/bitcore,olalonde/bitcore,braydonf/bitcore,bilthon/bitcore,janko33bd/bitcore,bitjson/bitcore,braydonf/bitcore,UdjinM6/bitcore-dash,pnagurny/bitcore,ryanxcharles/fullnode,eXcomm/bitcore,MonetaryUnit/bitcore,martindale/bitcore,bilthon/bitcore,daxxog/clamcore,phplaboratory/bitcore,iobond/bitcore,martindale/fullnode,williamcotton/bitcore,genecyber/bitcore,adjoinant/bitcore,lekkas/bitcore,initaldk/bitcore,TeamPiggyCoin/PiggyCore,daxxog/clamcore,bitpay/bitcore,martindale/bitcore,lekkas/bitcore,martindale/bitcore,bitpay/bitcore,iobond/bitcore,TOMOAKI12345/bitcore,phplaboratory/bitcore,martindale/bitcore,adjoinant/bitcore,iobond/bitcore,williamcotton/bitcore,jcvernaleo/bitcore,olalonde/bitcore,maraoz/coinforge,initaldk/bitcore,bitjson/bitcore,jcvernaleo/bitcore,eordano/bitcore,litecoin-project/litecore,TeamPiggyCoin/PiggyCore,bitpay/bitcore