Update all branch pointers to 2.0 branches
Update all branch pointers to 2.0 branches

laurenrother/riak,glickbot/riak,GabrielNicolasAvellaneda/riak,elkingtonmcb/riak,biddyweb/riak,DavidAlphaFox/riak,yangchengjian/riak,authbox-lib/riak,basho/riak,amyvmiwei/riak