Pull request

I really like what you have started with the archetype.  I have 3 feature branches with some changes I would like to see incorporated if you agree, or all of them are in this develop branch.

1. The module runtime dependencies are not copied to lib folder (feature/mod-lib-dir).  Also added properties for dependency/plugin versions.
2. Is there a reason the module is created in target too?  Seems the assemble can be simplified (feature/assembly-simplify)
3. I would prefer not to have all the site related files included in the archetype.  Can't this be achieved with just running: mvn clean package site? (feature/site)