On the invoke-diff-cmd-feature branch: Update BRANCH-README file.

* BRANCH-README:
  (Log messages): Update entries.

  (Diff file for this Branch): New entry.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/invoke-diff-cmd-feature@1541728 13f79535-47bb-0310-9956-ffa450edef68