frame_data needs dev dplyr

lists.Rmd

@@ -625,7 +625,8 @@ The first argument is a list of functions or character vector of function names,
 
 You can use `dplyr::frame_data()` to create these matching pairs a little easier:
 
-```{r}
+```{r, eval = FALSE}
+# Needs dev version of dplyr
 sim <- dplyr::frame_data(
   ~f,      ~params,
   "runif", list(min = -1, max = -1),