(very minor) Update to README.md
(very minor) Update to README.md

JRBurke's blog has moved -> updated. Also, since the text mentions "*about* James", linked to /about subpage.
vtex/curl,dfd07d/curl,jaredcacurak/curl,marian-r/curl,runt18/curl,jaredcacurak/curl,cujojs/curl,marian-r/curl,vtex/curl,cujojs/curl,runt18/curl,djkost85/curl-1,cujojs/curl,djkost85/curl-1,vtex/curl,dfd07d/curl,marian-r/curl,dfd07d/curl,runt18/curl,djkost85/curl-1,jaredcacurak/curl