Update README.md

Add the new github pages for api documentation

Author: jfritschi

README.md

@@ -4,10 +4,15 @@ phpCAS
 phpCAS is an authentication library that allows PHP applications to easily authenticate
 users via a Central Authentication Service (CAS) server.
 
-Please see the phpCAS website for more information:
+Please see the wiki website for more information:
 
 https://wiki.jasig.org/display/CASC/phpCAS
 
+Api documentation can be found here:
+
+https://apereo.github.io/phpCAS/
+
+
 [![Build Status](https://travis-ci.org/apereo/phpCAS.png)](https://travis-ci.org/apereo/phpCAS)