Dynamic Queues

This code permit use of dynamic-queues

Example:
```ruby
Sidekiq::Queue[queue_name].limit = 1
   
job_id = Sidekiq::Client.push({
  'class' => meta_worker.klass_name,
  'queue' => queue_name,
  'args'  => [args],
  'retry' => false
})
```
Thanks! I installed PreserveEOL in my vim. :)