Change wording of README warning to allow for backwards compatibility.
Change wording of README warning to allow for backwards compatibility.

git-svn-id: 2712f698efa3e564a6c0f3949cb66471e94d381e@1538888 13f79535-47bb-0310-9956-ffa450edef68

apache/manifoldcf-integration-solr-4.x