I've completed pass one of the howto here: http://docs.codehaus.org/display/MAVEN/Creating+a+Maven+Integration+Test
Eventually this will walk through using the archetypeNG plugin to create the sample, but several issues stopped me from fully documenting it. I was able to make it work at one point, but it's not quite ready yet from an end user standpoint anyway. The howto walks through using the sample project used to create the archetype, so the rest of the doc is relevant. Feedback please. --Brian
