Internal README

How to make a new release for Maven Central:

update: <version> in pom.xml, README.md, and CHANGES.md
mvn clean deploy -P release
go to https://oss.sonatype.org/ -> Staging repositories, scroll down, select, and click "Release"
git tag -a vx.y -m 'version x.y'
git push origin vx.y
set version in pom.xml to x.y-SNAPSHOT

Also see http://central.sonatype.org/pages/apache-maven.html