[Docs] Update changelog and upgrade guide for v0.5.2

Author: lindyhopchris

CHANGELOG.md

@@ -2,6 +2,13 @@
 All notable changes to this project will be documented in this file. This project adheres to
 [Semantic Versioning](http://semver.org/) and [this changelog format](http://keepachangelog.com/).
 
+## [0.5.2] - 2016-11-11
+
+### Added
+- Generator commands to generate the classes required for a JSON API resource. To view available commands use 
+`php artisan list make:json-api`. The main command is `make:json-api:resource` which generates multiple classes for
+a JSON API resource at once. Credit to @jstoone for contributing this feature.
+
 ## [0.5.1] - 2016-11-09
 
 ### Changed

UPGRADE.md

@@ -2,6 +2,14 @@
 
 This file provides notes on how to upgrade between versions.
 
+## v0.5.0|v0.5.1 to v0.5.2
+
+Version `0.5.2` adds generator commands to your application. We've updated the configuration so you will need to
+add the `generator` config array from the bottom of the `config/json-api.php` to the `json-api.php` config file
+in your application. 
+
+This however is optional as the generators will work without this configuration being added.
+
 ## v0.4 to v0.5
 
 Refer to the [UPGRADE-0.5.md](UPGRADE-0.5.md) file for instructions.