README.md in amqp-client-0.1.0 vs README.md in amqp-client-0.2.0

@@ -18,19 +18,50 @@
 
     $ gem install amqp-client
 
 ## Usage
 
+Low level API
+
 ```ruby
 require "amqp-client"
 
 c = AMQP::Client.new("amqp://guest:guest@localhost")
 conn = c.connect
 ch = conn.channel
 q = ch.queue_declare
 ch.basic_publish "Hello World!", "", q[:queue_name]
 msg = ch.basic_get q[:queue_name]
 puts msg.body
+```
+
+High level API, is an easier and safer API, that only deal with durable queues and persisted messages. All methods are blocking in the case of connection loss etc. It's also fully thread-safe. Don't expect it to be extreme throughput, be expect 100% delivery guarantees (messages might be deliviered twice, in the unlikely event of a connection loss between message publish and message confirmed by the server).
+
+```ruby
+amqp = AMQP::Client.new("amqp://localhost")
+amqp.start
+
+# Declares a durable queue
+q = amqp.queue("myqueue")
+
+# Bind the queue to any exchange, with any binding key
+q.bind("amq.topic", "my.events.*")
+
+# The message will be reprocessed if the client lost connection to the server
+# between the message arrived and the message was supposed to be ack:ed.
+q.subscribe(prefetch: 20) do |msg|
+  process(JSON.parse(msg.body))
+  msg.ack
+rescue
+  msg.reject(requeue: false)
+end
+
+# Publish directly to the queue
+q.publish { foo: "bar" }.to_json, content_type: "application/json"
+
+# Publish to any exchange
+amqp.publish("my message", "amq.topic", "topic.foo", headers: { foo: 'bar' })
+amqp.publish(Zlib.gzip("an event"), "amq.topic", "my.event", content_encoding: 'gzip')
 ```
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake test` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.