small touch up in R2BayesX.R

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@920 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
updated all references

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@921 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
finalizing R2BayesX paper

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@922 edb9625f-4e0d-4859-8d74-9fd3b1da38cb