added section in RELEASE_NOTES.md
added section in RELEASE_NOTES.md

Signed-off-by: Joshua Colson <945b5b30a087f5f76327dfceeb3d104f57c97034@gmail.com>

chef/ohai,mattray/ohai,jaymzh/ohai,jaymzh/ohai,mattray/ohai,higanworks/ohai,higanworks/ohai,chef/ohai