Switch to Atmosphere 2.1.3

git-svn-id: http://primefaces.googlecode.com/svn/examples/trunk/showcase@11042 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Use the new @PathParam annotation

git-svn-id: http://primefaces.googlecode.com/svn/examples/trunk/showcase@11046 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c