The documentation
[1] has the artifact id as "maven-was6-plugin" when it should be "was6-maven-plugin".
I guess this isn't a problem for most ppl but when someone's a bit dyslexic it can be a hard thing to track down. >
Please find / replace the code for the bad artifact id. Thanks.
[1] http://mojo.codehaus.org/was6-maven-plugin/examples/installing-ears.html