Removed Ant build detritus.

No longer using Ant to build this bundle.  Switched to Maven.  Removed
all files that were related to the older Ant build process.
Added link to GitHub issue tracker.
Added support mailing list information.
Removed parent in favor of dist. mgmt. section.

The latest hosting guide for Sonatype OSSRH recommends a
distributionManagement section for authentication
(http://central.sonatype.org/pages/apache-maven.html#distribution-management-and-authentication).
Switched to this instead of inheriting from the Sonatype parent POM.
Minor formatting adjustment for readability.