link: the url you wish to add (can be list of urls)
session: (optional) the authentication credentials from fs_auth. If not provided, will attempt to load from cache as long as authentication has been run.
debug: logical, should function return details of PUT request?
Returns
output of PUT request (invisibly)
Examples
## Not run:fs_add_links(138, list("http://carlboettiger.info","http://ropensci.org"))## End(Not run)