Removed dependency to jruby, since its optional, and updated README.

git-svn-id: https://svn.apache.org/repos/asf/incubator/felix/trunk@450635 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/mishell/README.txt b/mishell/README.txt
index aa28844..1e160d1 100644
--- a/mishell/README.txt
+++ b/mishell/README.txt
@@ -23,7 +23,9 @@
 1. It needs Java 6 to work (as it depends on javax.script API). 

 Once that API is stable and released standalone, it should also work in Java 5.

 2. It needs JMX introspector.

-3. It needs classes from com.sun.jruby.* and from org.jruby. The easiest way is to bundle both together

+By default, the only available engine is the javascript bundled with Java 6. To add new ones, you need to

+install the bundles. For example for ruby:

+- It needs classes from com.sun.jruby.* and from org.jruby. The easiest way is to bundle both together

 and export both packages in order to run ruby. 

 	- The binding is available at https://scripting.dev.java.net/ and licensed

 	under the BSD license. Download the jsr223-engines.[zip|tar.gz]