Add `--node-number` to /dev/run options
Add `--node-number` to /dev/run options

This gives the option of specificing the seed number when generating the
node name and the port for that node.

e.g.
 /dev/run --node-number 5
- node5@127.0.0.1 on port 55894

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb