add dummy strings to proof_auth example so users dont think you dont pass anything to it

Author: sckott

R/auth.R

@@ -28,7 +28,7 @@ proof_header <- function(token = NULL) {
 #' the PROOF API
 #' @examples
 #' # Sys.getenv("PROOF_TOKEN")
-#' # x <- proof_authenticate()
+#' # x <- proof_authenticate("username", "password")
 #' # Sys.getenv("PROOF_TOKEN")
 proof_authenticate <- function(username, password) {
   response <- POST(make_url("authenticate"), body = list(