README.markdown in adhearsion-2.4.0.beta1 vs README.markdown in adhearsion-2.4.0.beta2

@@ -25,10 +25,10 @@
 
 * Ruby 1.9.2+ or JRuby 1.7.0+
 * A VoIP platform:
   * Asterisk 1.8+
   * FreeSWITCH
-  * Prism 11+ with rayo-server
+  * A Rayo server (Prism 11+ with rayo-server, or FreeSWITCH with mod_rayo)
 * An interest in building cool new things
 
 \* Support for Ruby 1.9.2 is deprecated, and requires locking your application to ActiveSupport 3.x as follows:
 
 ```ruby