Update changelog

Author: BookOfGreg

CHANGELOG.md

@@ -15,12 +15,14 @@
 #### New Features
 
 - React 16.9.0
-- Sprockets users get React_UJS 2.6.0
+- Sprockets users get React_UJS 2.6.1
 
 #### Deprecation
 
 #### Bug Fixes
 
+- React_UJS 2.6.1 still complies with ES5 #1027 #1026 #1016
+
 ## 2.6.0
 
 #### Breaking Changes

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 🎉 Thanks for taking the time to contribute! 🎉
 
-With 2 Million+ downloads of the react-rails Gem and another 100k+ downloads of react_ujs on NPM, you're helping the biggest React + Rails community!
+With 5 Million+ downloads of the react-rails Gem and another 2 Million+ downloads of react_ujs on NPM, you're helping the biggest React + Rails community!
 
 What follows is a set of guidelines for contributing to React-Rails, inside the [react-js Organization](https://github.com/reactjs), part of the wider [React Community](https://reactcommunity.org/)