README.md in barbeque_client-0.9.1 vs README.md in barbeque_client-0.10.0

@@ -26,10 +26,11 @@
 ```rb
 execution = BarbequeClient.enqueue(
   job:     'NotifyAuthor',       # @param [String] job     - Job name to enqueue.
   message: { user_id: 7553989 }, # @param [Object] message - An object which is serializable as JSON.
   queue:   'default',            # @param optional [String] queue - A queue name to enqueue a job.
+  delay_seconds: 0,              # @param optional [Integer] delay_seconds - Message timer of SQS.
 )
 execution.message_id #=> "a3c653c1-335e-4d4d-a6f9-eb91c0253d02"
 execution.status     #=> "pending"
 ```
 
@@ -37,9 +38,24 @@
 
 ```rb
 message_id = "a3c653c1-335e-4d4d-a6f9-eb91c0253d02"
 BarbequeClient.status(message_id: message_id) #=> "success"
 ```
+
+### With Rails
+
+Barbeque client has adapter for ActiveJob.
+
+```rb
+# config/environments/some_environment.rb
+Rails.application.config.active_job.queue_adapter = :barbeque
+```
+
+And everything will be ok. Don't forget to setup `config.application` and `config.endpoint` in somewhere.
+One more thing, `config.default_queue` option is meaningless with Rails.
+`default_queue` is the fallback option for enqueueing without specified queue name.
+However, ActiveJob always set default queue as 'default' internally,
+there is no place to work on. So please use [`queue_as`](http://api.rubyonrails.org/classes/ActiveJob/QueueName/ClassMethods.html#method-i-queue_as) when you want to use different queue name.
 
 ### Distributed tracing
 Configure `tracing` option. Pick one of supported tracers.
 See more detail in https://github.com/cookpad/garage_client#tracing.