rome-propono POM in Maven Central needs fixes

Heyo, just thought I'd let you guys know that the POM released on Maven Central: http://search.maven.org/remotecontent?filepath=net/java/dev/rome/rome-propono/1.0.0/rome-propono-1.0.0.pom fails when used as a dependency in isolation.

I noticed that you had commented out the repository for oauth and I had to add that into my own project before propono would resolve along with all dependencies. It appears that there are some oauth artifacts available via Maven Central, but not the versions listed as your dependencies.

Ta,
Greg