the thing is that there is no archetype with the artifactId you used. There is available only the one for Java 1.6.
This part of Arquillian tutorial hasn't been updated for a long time, that's why there is still Java 1.6. We will try to improve it and update the tutorials, but we are struggling with lack of time and resources.
We would really appreciate any help, so if you find anything to improve or to fix on the web pages, just contact us or send a PR: GitHub - arquillian/arquillian.github.com: Arquillian website source (develop branch) and hosting (master branch). Baked…