updated reqs to use JRuby

README.md

@@ -35,20 +35,13 @@ Then do all like `bundle exec rackup`
 Installation
 ------------
 
-* Ruby 1.9.2ish (RVM saved my life here - 1.9.2 because 1.9.1 has a segfault in ffi-rzmq)
+* JRuby 1.5+ (don't use MRI - it will crash horribly, check the ISSUES file)
 * [FFI](http://github.com/ffi/ffi), `gem install ffi` should be fine.
 * [Zero MQ](http://www.zeromq.org/area:download), you'll need to compile and install to get the headers and such for:
 * [ffi-rzmq](http://github.com/chuckremes/ffi-rzmq), which you'll have to build. The native zmq didn't work for me, but if you want to fix it, please do!
 * [json](http://github.com/genki/json), since the headers are returned in JSON, which is RAD. (Really Awesome, Dude)
 * Rack `gem install rack` if you want to run the rack example.
 
-Booby Traps
------------
-
-    uninitialized constant RUBY_ENGINE
-
-You're running an old Ruby, use 1.9.2.
-
 Contributing
 ------------