Set to TRUE to automatically rename. Default is FALSE.
verbose
By default verbose output is FALSE. Set to TRUE
if you need to troubleshoot any output or grab additional parameters.
dtoken
The Dropbox token generated by drop_auth. rdrop2
will try to automatically locate your local credential cache and use them.
However, if the credentials are not found, the function will initiate a new
authentication request. You can override this in drop_auth by
pointing to a different location where your credentials are stored.