added TODOs

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@820 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
added TODOs

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@821 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
small touchup in GAMart.R

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@822 edb9625f-4e0d-4859-8d74-9fd3b1da38cb