update README.md with new consumer info

README.md

@@ -59,18 +59,16 @@ f.state
 
 Messages can be consumed by calling the consume method and passing a block to handle the yielded messages.  The consume method blocks, so take care to handle that functionality appropriately (i.e. use Concurrent::Promise, Thread, etc).
 
-#### (JRuby-only)
+#### (JRuby)
 ```ruby
 require 'hermann'
 require 'hermann/consumer'
 require 'hermann_jars'
 
-zookeepers = "localhost:2181"
-groupId   = "group1"
 topic     = 'topic'
 new_topic = 'other_topic'
 
-the_consumer = Hermann::Consumer.new(topic, groupId, zookeepers)
+the_consumer = Hermann::Consumer.new(topic, zookeepers: "localhost:2181", group_id: "group1")
 
 the_consumer.consume(new_topic) do |msg|   # can change topic with optional argument to .consume
   puts "Recv: #{msg}"
@@ -78,6 +76,28 @@ end
 ```
 
 
+#### (MRI)
+
+MRI currently has no zookeeper / client group support.
+
+```ruby
+require 'hermann'
+require 'hermann/consumer'
+
+topic     = 'topic'
+new_topic = 'other_topic'
+
+the_consumer = Hermann::Consumer.new(topic, brokers: "localhost:9092", partition: 1)
+
+the_consumer.consume(new_topic) do |msg|   # can change topic with optional argument to .consume
+  puts "Recv: #{msg}"
+end
+```
+
+
+
+
+
 
 #### How to convert from using jruby-kafka