Adding demo folder and cleanup of overlong lines. 

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aqr@60 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Cleanup 



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aqr@61 edb9625f-4e0d-4859-8d74-9fd3b1da38cb