update changelog

CHANGELOG.md

@@ -15,6 +15,9 @@ Contributions and pull requests are always welcome. Contributors may often be fo
 - renamed the `paper-radio-group` `paper-radio` to just `radio` -- usage would now be `group.radio` as opposed to `group.paper-radio`.
 - Flex and layout attributes are replaced by classes (see [the documentation](http://miguelcobain.github.io/ember-paper/#/layout/introduction)). `flex=true` on Ember Paper components has also been removed and replaced by classes.
 
+### master
+- [68f4832](https://github.com/miguelcobain/ember-paper/commit/68f4832b67a3fd544164b1ace17d50d974b11ad2) add correct overflow class when dialog does not contain images (fixes [#807](https://github.com/miguelcobain/ember-paper/issues/807))
+
 ### 1.0.0-beta.3
 - [#802](https://github.com/miguelcobain/ember-paper/pull/802) allow icons to have tooltips.
 - [#772](https://github.com/miguelcobain/ember-paper/pull/772) fix tabs ink-bar in dialogs.