irc links not supported, be more explicit

Author: swannodette

README.md

@@ -40,7 +40,7 @@ Please point all of your questions and feedback to the
 [Clojure mailing list](http://groups.google.com/group/clojure). There
 is also a community run
 [ClojureScript user mailing list](http://groups.google.com/group/clojurescript) and
-the [IRC channel](irc://irc.freenode.net/#clojurescript) is quite active. The
+the IRC channel, `#clojurescript` on [freenode.net](https://freenode.net/), is quite active. The
 Jira bug/feature tracking application is located at
 <http://dev.clojure.org/jira/browse/CLJS>. Before submitting issues
 please read the