Update README for SuperEZ version 1.5

Updated version to 1.5 and added demo and release notes.

Author: bboczula

README.md

@@ -1,6 +1,23 @@
-# SuperEZ 1.4.1
+# SuperEZ 1.5
  A super-easy DirectX12 game engine.
 
+## Demo
+
+https://github.com/user-attachments/assets/7ef97b01-faf7-4d22-9a43-3f1a2432351f
+
+## Release Notes
+- Brand new Slider Puzzle game as a demo
+  - Put all the pieces in order
+- Basic Engine Interface
+  - Exposed some of the engine functionality to the game project via services
+  - Services are Scene, Input and Picker
+  - They allow to check input status, which entity was selected and perform basic operations on entities, like rotating or movin them in the world
+- Simple Entity Component System
+  - Each Enity can have a different Components
+  - You can query components for different entities
+  - Sample components are Transform, Geometry or Material
+  - You can modify Entity transformation via this system
+
 ## Build
 This repository uses the submodules, therefore you need to remember to clone them too.
 ```