Fix example startup command
Fix example startup command

Update example start up command. The existing example results in an error. It appears --port was added as a separate argument later on.
pombredanne/cayley,barakmich/cayley,kortschak/cayley,cayleygraph/cayley,pombredanne/cayley,cayleygraph/cayley,barakmich/cayley,kortschak/cayley,kortschak/cayley,pombredanne/cayley,pombredanne/cayley,kortschak/cayley,barakmich/cayley,barakmich/cayley,kortschak/cayley,barakmich/cayley