Updated CHANGELOG/README

CHANGELOG.md

 # CHANGELOG
 
+## 2020 - 08 - 03 - LTS 2019.4 Version
+
+**Version Tag** : `2019.4.0`
+
+* Updated Unity to 2019.4.3f1
+* Added Benchmark Mode (Flyby Camera)
+* **Fixes and Changes:**
+  * Rebuilt VFX Graphs
+  * Small Fixes for macOS
+
 ## 2020 - 06 - 08 - Package Upgrade
 
 **Version Tag** : `2019.3.3`

README.md

 
 In order to download and run the latest Spaceship demo project, make sure you have the following
 * [Github Desktop](https://desktop.github.com/) or [Git For Windows](https://git-scm.com/download/win) + [Git LFS](https://git-lfs.github.com/) (Required for Cloning the Repository) or any other git client.
-* Unity 2019.3.2f1 or newer (See each release notes in [changelog](https://github.com/Unity-Technologies/SpaceshipDemo/blob/master/CHANGELOG.md) for version requirements)
+* Unity 2019.4.3f1 or newer (See each release notes in [changelog](https://github.com/Unity-Technologies/SpaceshipDemo/blob/master/CHANGELOG.md) for version requirements)
 
 ## How to Download/Install