R CMD check fixes

Author: hadley

.Rbuildignore

@@ -16,3 +16,4 @@ visual_test
 ^icons$
 ^README\.Rmd$
 ^README-.*\.png$
+^logo\.png$

R/labeller.r

@@ -87,7 +87,6 @@
 #' p + facet_wrap(~vs + cyl2, labeller = label_parsed)
 #' }
 #' @name labellers
-#' @aliases NULL
 NULL
 
 collapse_labels_lines <- function(labels) {

R/theme-elements.r

@@ -127,6 +127,7 @@ element_text <- function(family = NULL, face = NULL, colour = NULL,
 print.element <- function(x, ...) utils::str(x)
 
 
+#' @param x A single number specifying size relative to parent element.
 #' @rdname element
 #' @export
 rel <- function(x) {