Update compatibility info.

README.md

@@ -4,11 +4,7 @@
 
 This gem provides high-level Ruby bindings to the [Stanford Core NLP package](http://nlp.stanford.edu/software/corenlp.shtml), a set natural language processing tools for tokenization, sentence segmentation, part-of-speech tagging, lemmatization, and parsing of English, French and German. The package also provides named entity recognition and coreference resolution for English.
 
-This gem only provides a thin wrapper over the Stanford Core NLP API. If you are looking for a natural language processing framework for Ruby, have a look at [Treat](https://github.com/louismullie/treat).
-
-**Compatibility**
-
-This gem is compatible with Ruby 1.9.2 and 1.9.3 as well as JRuby 1.7.1.
+This gem is compatible with Ruby 1.9.2 and 1.9.3 as well as JRuby 1.7.1. It is tested on both Java 6 and Java 7.
 
 **Installing**