README.md in circular_queue-0.0.2 vs README.md in circular_queue-0.0.3

@@ -1,6 +1,12 @@
 # Circular Queue
 
+[![Build Status](https://secure.travis-ci.org/alindeman/circular_queue.png)](http://travis-ci.org/alindeman/circular_queue)
+
+**circular_queue** *requires* Ruby 1.9 or a Ruby implementation that
+supports 1.9 syntax and standard library (e.g., JRuby in 1.9 mode;
+Rubinius 2.0 should work if/when Mutex#sleep is implemented).
+
 Documentation, including example use, is covered in the [API
 Docs](http://rdoc.info/github/alindeman/circular_queue/master/CircularQueue).
 
 ## License