Update CHANGELOG.md

Author: rpkyle

CHANGELOG.md

@@ -3,6 +3,9 @@ All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [1.8.1] -2020-02-27
+### Added
+- [#760](https://github.com/plotly/dash-core-components/pull/760) Added R examples to package help
+
 ### Changed
 - [#762](https://github.com/plotly/dash-core-components/pull/762) Renamed async modules with hyphen `-` instead of tilde `~`