DERBY-6377; Add Derby Nature doesn't work wirh Eclipse Kepler 4.3, only with Juno 4.2
  Adding a note to the top of the Readme to indicate this is no longer being maintained.


git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1532636 13f79535-47bb-0310-9956-ffa450edef68