Different drawing order to avoid a purple flood (Ar)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@799 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
added help for Ar method. Added a code{} tag to dplR.sty (need a way to call out functions like rwl.stats and even data.frame). This is not a great fix. Should mimic the Rd fil formatting? I don't know.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@800 edb9625f-4e0d-4859-8d74-9fd3b1da38cb