updated README to reflect latest features
updated README to reflect latest features

marian-r/curl,runt18/curl,dfd07d/curl,djkost85/curl-1,djkost85/curl-1,cujojs/curl,marian-r/curl,jaredcacurak/curl,vtex/curl,vtex/curl,jaredcacurak/curl,cujojs/curl,runt18/curl,cujojs/curl,vtex/curl,marian-r/curl,djkost85/curl-1,dfd07d/curl,runt18/curl,dfd07d/curl,jaredcacurak/curl