Added option to queue requests even when disconnected.  Fixed functions wrapping stream calls to handle errors.  Added test to check {error, disconnected} sent when the server drops the connection.
Added option to queue requests even when disconnected.  Fixed functions wrapping stream calls to handle errors.  Added test to check {error, disconnected} sent when the server drops the connection.

groovenauts-erlang/riak-erlang-client,GabrielNicolasAvellaneda/riak-erlang-client,linearregression/riak-erlang-client,pma/riak-erlang-client,jmayfield74/riak-erlang-client,inaka/riak-erlang-client,paulperegud/riak-erlang-client,SiftLogic/riak-erlang-client,rhumbertgz/riak-erlang-client,esl/riak-erlang-client