Prepares the project POM for Sonatype OSS deployement

* Adding the required stuff, in order to make the project viable
  for deployment to the Sonatype OSS repository (and later
  perhaps sync to Maven Central). At least a start, plan for now
  is to go full out on Travis-CI to deploy the SNAPSHOT builds.
  Let's see how that turns out.
Removes javadoc link statement

* Apparently linking is considered bad when producing javadoc
  Java API documentation - huh! Removing links for now and only
  doing some simple monospace output where class/method
  references are required.