anchor.diff:  
   This information was adapted from the [NATS](https://github.com/derekcollison/nats) README. NATS is a lightweight publish-subscribe and distributed queueing messaging system written in Ruby.
   
  -## Getting Started
  +## <a id='install'></a>Install NATS ##
   
   <pre class="terminal">
   $ gem install nats
  
positive.code: NATS.subscribe(subject, :queue => 'job.workers') { |msg| puts "Received '#{msg}'" }
  ~~~
  
  ## Advanced Usage
  ~~~ruby
  # Publish with closure, callback fires when server has processed the message
  NATS.publish('foo', 'You done?') { puts 'msg processed!' }
  
negative.code: NATS.subscribe('foo.>') { |msg, reply, sub| puts "Msg received on [#{sub}] : '#{msg}'" }
  ~~~
  
  ## <a id='queues-groups'></a>Queues Groups ##
  
  ~~~ruby
  # All subscriptions with the same queue name will form a queue group
  