[zanata/zanata-server] 3d7e55: docs: mention Java 1.8 requirement

[GitHub]

  Branch: refs/heads/java18runtime
  Home:   https://github.com/zanata/zanata-server
  Commit: 3d7e55de3a9470103daef021aabb48df915837ff
      https://github.com/zanata/zanata-server/commit/3d7e55de3a9470103daef021aabb48df915837ff
  Author: Sean Flanigan <sflaniga at redhat.com>
  Date:   2015-09-17 (Thu, 17 Sep 2015)

  Changed paths:
    M docs/release-notes.md

  Log Message:
  -----------
  docs: mention Java 1.8 requirement