Touch up readme for vagrant-cluster demo.
Touch up readme for vagrant-cluster demo.

hashicorp/serf,mapuri/serf,pmenglund/serf,mapuri/serf,hashicorp/serf,mapuri/serf,mapuri/serf,mapuri/serf,hashicorp/serf,pmenglund/serf,hashicorp/serf,pmenglund/serf,pmenglund/serf,pmenglund/serf,pmenglund/serf,hashicorp/serf,mapuri/serf