Update README

README.md

@@ -155,6 +155,7 @@ python setup.py install
 
 Download and build Snappy from http://code.google.com/p/snappy/downloads/list
 
+Linux:
 ```shell
 wget http://snappy.googlecode.com/files/snappy-1.0.5.tar.gz
 tar xzvf snappy-1.0.5.tar.gz
@@ -164,6 +165,11 @@ make
 sudo make install
 ```
 
+OSX:
+```shell
+brew install snappy
+```
+
 Install the `python-snappy` module
 ```shell
 pip install python-snappy
@@ -173,40 +179,36 @@ pip install python-snappy
 
 ## Run the unit tests
 
-_These are broken at the moment_
-
 ```shell
-tox ./test/test_unit.py
-```
-
-or
-
-```shell
-python -m test.test_unit
+tox
 ```
 
 ## Run the integration tests
 
-First, checkout the Kafka source
-
-```shell
-git submodule init
-git submodule update
-cd kafka-src
-./sbt update
-./sbt package
-./sbt assembly-package-dependency
-```
-
-And then run the tests. This will actually start up real local Zookeeper
+The integration tests will actually start up real local Zookeeper
 instance and Kafka brokers, and send messages in using the client.
 
+Note that you may want to add this to your global gitignore:
 ```shell
-tox ./test/test_integration.py
+.gradle/
+clients/build/
+contrib/build/
+contrib/hadoop-consumer/build/
+contrib/hadoop-producer/build/
+core/build/
+core/data/
+examples/build/
+perf/build/
 ```
 
-or
-
+First, check out and the Kafka source:
 ```shell
-python -m test.test_integration
+git submodule update --init
+./build_integration.sh
+```
+
+Then run the tests against supported Kafka versions:
+```shell
+    KAFKA_VERSION=0.8.0 tox
+    KAFKA_VERSION=0.8.1 tox
 ```