Check for double-initialization in KayVee LocalStore
Prevent KayVee DistributedStore.{start,stop,initialize} from being interleaved
Prevent RaftNetworkClient.{start,stop} from being interleaved

Resolves #22.
Documentation fixups for RaftAgent
Merge pull request #31 from allengeorge/start_stop

Prevent interleaving of start/stop