Merge pull request #1660 from alextaylor000/update-attach-file-docs

Add documention for Capybara::Node::Actions#attach_file options hash

lib/capybara/node/actions.rb

@@ -150,6 +150,11 @@ module Capybara
       # @param [String] locator       Which field to attach the file to
       # @param [String] path          The path of the file that will be attached, or an array of paths
       #
+      # @option options [Symbol] match (Capybara.match)     The matching strategy to use (:one, :first, :prefer_exact, :smart).
+      # @option options [Boolean] exact (Capybara.exact)    Match the exact label name/contents or accept a partial match.
+      # @option options [Fixnum] wait (Capybara.default_max_wait_time)      If using a Javascript driver, maximum number of seconds during which the element will be searched for.
+      # @option options [Boolean] multiple Match field which allows multiple file selection
+      #
       def attach_file(locator, path, options={})
         Array(path).each do |p|
           raise Capybara::FileNotFound, "cannot attach file, #{p} does not exist" unless File.exist?(p.to_s)