update NEWS for frozen nil/true/false.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47537 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-09-11 11:59:15 +00:00 · 2014-09-11 11:59:15 +00:00 · 7b5b3eb3af
--- a/3
+++ b/3
@ -13,6 +13,9 @@ with all sufficient information, see the ChangeLog file.
 === Language changes
 * nil/true/false
  * nil/true/false objects are frozen. [Feature #8923]
 === Core classes updates (outstanding ones only)
 * Binding