so you just have to add e.g. the following part to the repositories section of your pom.xml
<repository>
<id>os890.googlecode.com</id>
<url>http://os890-m2-repository.googlecode.com/svn/tags/os890</url>
</repository>
snapshots are available via
<repository>
<id>os890.googlecode.com</id>
<url>http://os890-m2-repository.googlecode.com/svn/trunk/os890</url>
</repository>
further information are available in the usage-wiki as well as the repository overview!