FlickrFunctions         Functions objects for interfacing to Flickr
                        operations via a FlickrSession object
Rflick                  Overview of Rflickr
addSignature            Internal functions that need to be exported
authenticate            Log-in to Flickr to create a session
flickr.auth.getFrob     R functions interfacing to Flickr API
                        operations
flickrSession           Constructor for convenience object for Flickr
                        calls
