Updated author information in vignette and package

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ruler@70 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
change in maintainer

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ruler@71 edb9625f-4e0d-4859-8d74-9fd3b1da38cb