Update Changelog

Author: polyfractal

Diff for: CHANGELOG.md

@@ -1,3 +1,6 @@
+## Release 2.0.2
+- Use curl opts for auth instead of inline syntax [[4b01af8]](http://github.com/elasticsearch/elasticsearch-php/commit/4b01af8)
+
 ## Release 2.0.1
 - Add ClientBuilder::FromConfig to allow easier automated building of Client [[a07486d]](http://github.com/elasticsearch/elasticsearch-php/commit/a07486d)