Tweak the note so upgraders notice

Fixes #711

README.md

@@ -58,19 +58,23 @@ running the following command:
     rails generate delayed_job:active_record
     rake db:migrate
 
-In Rails 4.2 set the queue_adapter in config/application.rb
+For Rails 4.2, see [below](#rails-4-2)
+
+Development
+===========
+In development mode, if you are using Rails 3.1+, your application code will automatically reload every 100 jobs or when the queue finishes.
+You no longer need to restart Delayed Job every time you update your code in development.
+
+Rails 4.2
+=========
+Set the queue_adapter in config/application.rb
 
 ```ruby
 config.active_job.queue_adapter = :delayed_job
 ```
 
 See the [rails guide](http://guides.rubyonrails.org/active_job_basics.html#setting-the-backend) for more details.
 
-Development
-===========
-In development mode, if you are using Rails 3.1+, your application code will automatically reload every 100 jobs or when the queue finishes.
-You no longer need to restart Delayed Job every time you update your code in development.
-
 Rails 4
 =======
 If you are using the protected_attributes gem, it must appear before delayed_job in your gemfile.