One of the greatest news about Java EE 7 is, there is a usable dependency in maven central.
And here is a minimalistic POM for your Java EE 7 projects. I also added log4j, junit and mockito which are not necessary, but I use them a lot, so I added them for convenience.
If you need in memory database checkout "H2 Database Engine Cheat Sheet" [http://www.h2database.com/html/cheatSheet.html]