add some links to readme

README.rdoc

@@ -117,9 +117,9 @@ Released under the same license as Ruby. No Support. No Warranty.
 
 == AUTHOR:
 
-Original code by: Dave Thomas -- Pragmatic Programmers, LLC
-Overhauled by: Alex Chaffee
-Gemmed by: Cuong Tran
+Original code by: Dave Thomas -- Pragmatic Programmers, LLC <http://agilewebdevelopment.com/plugins/annotate_models>
+Overhauled by: Alex Chaffee <http://alexch.github.com>
+Gemmed by: Cuong Tran <http://github.com/ctran>
 Maintained by: Alex Chaffee and Cuong Tran
 Homepage: http://github.com/ctran/annotate_models