Update README re 0.10 brokers

Author: dpkp

README.rst

@@ -16,10 +16,10 @@ Python client for the Apache Kafka distributed stream processing system.
 kafka-python is designed to function much like the official java client, with a
 sprinkling of pythonic interfaces (e.g., consumer iterators).
 
-kafka-python is best used with 0.9 brokers, but is backwards-compatible with
+kafka-python is best used with newer brokers (0.10 or 0.9), but is backwards-compatible with
 older versions (to 0.8.0). Some features will only be enabled on newer brokers,
 however; for example, fully coordinated consumer groups -- i.e., dynamic partition
-assignment to multiple consumers in the same group -- requires use of 0.9 kafka
+assignment to multiple consumers in the same group -- requires use of 0.9+ kafka
 brokers. Supporting this feature for earlier broker releases would require
 writing and maintaining custom leadership election and membership / health
 check code (perhaps using zookeeper or consul). For older brokers, you can
@@ -38,8 +38,8 @@ KafkaConsumer
 *************
 
 KafkaConsumer is a high-level message consumer, intended to operate as similarly
-as possible to the official 0.9 java client. Full support for coordinated
-consumer groups requires use of kafka brokers that support the 0.9 Group APIs.
+as possible to the official java client. Full support for coordinated
+consumer groups requires use of kafka brokers that support the Group APIs: kafka v0.9+.
 
 See <http://kafka-python.readthedocs.org/en/master/apidoc/KafkaConsumer.html>
 for API and configuration details.
@@ -119,7 +119,7 @@ for interacting with kafka brokers via the python repl. This is useful for
 testing, probing, and general experimentation. The protocol support is
 leveraged to enable a KafkaClient.check_version() method that
 probes a kafka broker and attempts to identify which version it is running
-(0.8.0 to 0.9).
+(0.8.0 to 0.10).
 
 
 Low-level