fixing libevent link

README.md

@@ -4,7 +4,7 @@ Cl-async is a library for general purpose, non-blocking programming library for
 Common Lisp. I tried other non-blocking libraries, but they either require a
 large number of dependencies, aren't portable, or are too specialized to one task.
 Cl-async uses [Libevent2](http://libevent.org/) as the async backend, which is
-a fast, stable, portable library for asynchronous IO (see my [notes on choosing Libevent](#libevent)).
+a fast, stable, portable library for asynchronous IO (see my [notes on choosing Libevent](http://orthecreedence.github.com/cl-async/implementation-notes#libevent)).
 
 The main goal is to provide an experience that makes general asynchronous 
 programming in lisp a delight instead of a chore. Portability and ease of use