Not sure whether I'm kean on licenses on READMEs, but this is quite substantial. Perhaps might be better to move this content into the documentation and into the RELEASE_NOTES. Opinions?

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1460290 13f79535-47bb-0310-9956-ffa450edef68