move internet examples into \dontrun{}.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tsdbi@542 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
move internet examples into \dontrun{}.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tsdbi@543 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
minor edit.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tsdbi@544 edb9625f-4e0d-4859-8d74-9fd3b1da38cb