remove duplicate README (in favor of README.org)
remove duplicate README (in favor of README.org)

README.org is already plaintext, and Github renders it nicely to boot.

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