$persistent_messages parameter wasn't passed further to queue declaration

[lexabug]

Fixed doc block of the Celery constructor. $persistent_messages parameter wasn't passed further to queue declaration. $connector arg defaults to null since it better fits "not specified" value.

[jdufresne]

@lexabug Thanks!

Can you rebase this on the latest master. Would it be possible to add a test for $persistent_messages?

Can you also update the example in the README? The connector argument should now be null:

./README.md\093:    $c = new \Celery\Celery($host, $user, $password, $vhost, 'celery', 'celery', 5671, false, false, 0, $ssl_options);