prepare 1.2.0

Author: apucacao

CHANGELOG.md

@@ -1,6 +1,14 @@
 # Change log
 
-All notable changes to the LaunchDarkly client-side JavaScript SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
+All notable changes to the LaunchDarkly client-side JavaScript SDK will be documented in this file. This 
+project adheres to [Semantic Versioning](http://semver.org).
+
+## [1.2.0] - 2017-12-15
+### Added
+- Added `useReport` initialization option to use `REPORT` instead of `GET` when communicating with LaunchDarkly.
+### Fixed
+- Authentication errors will now be logged — the root cause for these errors is usually an invalid
+  client-side ID.
 
 ## [1.1.13] - 2017-12-12
 ### Changed

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ldclient-js",
-  "version": "1.1.13",
+  "version": "1.2.0",
   "description": "LaunchDarkly SDK for JavaScript",
   "author": "LaunchDarkly <team@launchdarkly.com>",
   "license": "Apache-2.0",