[maven-release-plugin] copy for tag org.apache.sling.scripting.javascript-2.0.20

git-svn-id: https://svn.apache.org/repos/asf/sling/tags/org.apache.sling.scripting.javascript-2.0.20@1690960 13f79535-47bb-0310-9956-ffa450edef68
tree: 6cead740fb8695abd64c1838c2e5c3f724d7a697
  1. README.txt
  2. pom.xml
  3. src/