Add changelog entry

wjohnstondrip · wjohnstondrip · commit b40e01b160ca · 2018-08-09T10:47:16.000-05:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+* [#20](https://github.com/DripEmail/drip-php/pull/20) - Return error response instead of throwing exception. (@joeldodge79)
 * Your improvement here!
 
 ## 1.1.0
