Add pom.xml elements as required by Maven Central.
Add pom.xml elements as required by Maven Central.

Marc-Calis/shimmer,openmhealth/shimmer,Marc-Calis/shimmer,smalldatalab/omh-shims,openmhealth/shimmer,smalldatalab/omh-shims,Marc-Calis/shimmer,openmhealth/shimmer,smalldatalab/omh-shims,Marc-Calis/shimmer,smalldatalab/omh-shims,openmhealth/shimmer