Update Team in pom.xml

This will be shown on the website like:

![bildschirmfoto 2014-10-21 um 09 58 39](https://cloud.githubusercontent.com/assets/214207/4714887/232e3f10-58f8-11e4-91f7-cfcb9498e227.png)

@kcooney @stefanbirkner Please let me know if you want to use a different email address.
Could you please use mail@stefan-birkner.de? Thanks, stefan.