Add offline build note to release-notes
Add offline build note to release-notes
GabrielNicolasAvellaneda/riak,basho/riak,biddyweb/riak,DavidAlphaFox/riak,yangchengjian/riak,xuejianhai/riak,elkingtonmcb/riak,authbox-lib/riak,glickbot/riak,amyvmiwei/riak,laurenrother/riak