Update Readme.md

Author: muit

Readme.md

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 # Attributes Extension
+[![Version](https://img.shields.io/github/v/release/piperift/AttributesExtension?label=version)](https://github.com/PipeRift/AttributesExtension/releases)
+![UE4](https://img.shields.io/badge/UE4-4.22%2B-orange)
+[![Discord](https://img.shields.io/discord/288221302089711616?color=%237289da&label=discord)](https://discord.gg/nnsdr22)
 
 **Attributes Extension** is a lightweight plugin that adds a very **intuitive, easy and flexible attribute system** to UE4. This can be very easily integrated into game systems like buffs, areas, spells, abilities, or any other kind of gameplay mechanic.