Added missing Article documentation + small fixes

CHANGELOG.md

@@ -4,6 +4,22 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 4.0.0-beta.2 - 2021-11-22
+
+### Added
+
+- rest of missing `Article` documentation
+- requirements to Readme
+
+### Changed
+
+- fixed small issues with documentation
+- used array concat instead of `array_merge`
+
+### Fixed
+
+- `Product` entity would not return all fields in `jsonEncode` result
+
 ## 4.0.0-beta.1 - 2021-08-25
 
 ### Added

README.md

@@ -8,6 +8,10 @@
 
 MPAPI client is a tool created to help Internet Mall, a. s. partners easily manage article catalogue, deliveries, orders etc. using Mall Marketplace API.
 
+## Requirements
+- `64bit` version of `PHP 7.4` or `PHP 8`
+- Guzzle 7
+
 ## Installation
 
 To install the client using [Composer](https://getcomposer.org/doc/00-intro.md) run following command in your repository
@@ -127,9 +131,9 @@ List of custom Exceptions thrown in this client can be found [here](doc/Exceptio
 
 ## ⚠ Warning
 
-- client does not include support for deprecated endpoints (i.e., deliveries or gifts), that will be changed, replaced or removed in the future
+- client does not include support for deprecated endpoints (i.e., `/v1/deliveries` or `/v1/gifts`), that will be changed, replaced or removed in the future
 
-### This is still a Beta release, and some documentation and examples are missing or incomplete
+### This is still a Beta release, and some features are missing or incomplete
 
-- [ ] Article client documentation
 - [ ] Order client documentation and examples
+- [ ] Transports v2 support