update NEWS for read / write nonblock

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42696 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index c823acf4b4..9017c12ec8 100644
--- a/NEWS
+++ b/NEWS
@@ -40,6 +40,8 @@ with all sufficient information, see the ChangeLog file.
   * extended methods:
     * IO#seek supports SEEK_DATA and SEEK_HOLE as whence.
     * IO#seek accepts symbols (:CUR, :END, :SET, :DATA, :HOLE) for 2nd argument.
+    * IO#read_nonblock accepts optional `exception: false` to return symbols
+    * IO#write_nonblock accepts optional `exception: false` to return symbols
 
 * Kernel
   * New methods: