[weld-dev] Seam 3 / Weld Extensions Overview

All I've started crafting this from list discussions http://www.seamframework.org/Documentation/Seam3DesignOverview If you are leading a module, please review and edit the documents to provide a nice elevator pitch for the module :-) Some of the text is *very* rough right now, but I think it starts to provide some structure - I will continue working on this tomorrow. Pete