Minor Description
The repositories section specifies the central repository which is unnecessary as it is automatically inherited and as such confusing. It also has the incorrect repository for JBoss in it. The Netty page is wrong.
http://repository.jboss.org/nexus/content/groups/public also mirrors central etc.
The correct one is: http://repository.jboss.org/nexus/content/groups/public-jboss/ which only hosts JBoss stuff.