FIX: problem with spaces in process args

Arguments where all together (BEFORE):
-n 2--queues=batch_mail,email_stats--pool=batch_mail:2 --pool=email_stats:1 restart
Now:
-n 2 --queues=batch_mail,email_stats --pool=batch_mail:2 --pool=email_stats:1 restart
Merge pull request #1 from dperezrada/master

FIX: problem with spaces in process args