ARROW-6183: [R] Document that you don't have to use tidyselect if you don't want

Closes #5144 from nealrichardson/col-select-docs and squashes the following commits:

2b344cb <Neal Richardson> Document that col_select takes a character vector too

Authored-by: Neal Richardson <neal.p.richardson@gmail.com>
Signed-off-by: François Saint-Jacques <fsaintjacques@gmail.com>

Author: nealrichardson

r/R/csv.R

@@ -46,7 +46,9 @@
 #' column names and will not be included in the data frame. (Note that `FALSE`
 #' is not currently supported.) Alternatively, you can specify a character
 #' vector of column names.
-#' @param col_select A [tidy selection specification][tidyselect::vars_select]
+#' @param col_select A character vector of column names to keep, as in the
+#' "select" argument to `data.table::fread()`, or a
+#' [tidy selection specification][tidyselect::vars_select()]
 #' of columns, as used in `dplyr::select()`.
 #' @param skip_empty_rows Should blank rows be ignored altogether? If
 #' `TRUE`, blank rows will not be represented at all. If `FALSE`, they will be

r/R/feather.R

@@ -170,8 +170,7 @@ FeatherTableReader.raw <- function(file, mmap = TRUE, ...) {
 #' Read a Feather file
 #'
 #' @param file an `arrow::ipc::feather::TableReader` or whatever the [FeatherTableReader()] function can handle
-#' @param col_select [tidy selection][tidyselect::vars_select()] of columns to read.
-#' @param as_tibble should the [arrow::Table][arrow__Table] be converted to a tibble.
+#' @inheritParams read_delim_arrow
 #' @param ... additional parameters
 #'
 #' @return A `data.frame` if `as_tibble` is `TRUE` (the default), or a [arrow::Table][arrow__Table] otherwise