set up presentation.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/semtools@322 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
knit command to produce latex file.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/semtools@323 edb9625f-4e0d-4859-8d74-9fd3b1da38cb