need for authentication support

[justplaymore]

Beacuse the origin php-resque don't support redis authentication, so I chose your php-resque-ex. Then I found out this awsome command line tool, but without redis authentication, >_< In production environment, redis authentication is almost mandatory.

[rlweb]

It wouldn't be a massive change to add authentication, another call $redis->auth(password) to be added to the redi connections when created? and also to added to php-resque