License Badge (#1282)

Update README.md

Co-authored-by: Robel Getnet Geremew <[email protected]>

Author: sashaphmn

README.md

@@ -1,6 +1,7 @@
 ![ChainSafeGaming](https://user-images.githubusercontent.com/681817/218129249-850c4be0-b64f-4215-a780-7766db8cd75e.png)
 
 
+[<img alt="License" src="https://img.shields.io/github/license/ChainSafe/web3.unity" height="20">](https://github.com/ChainSafe/web3.unity/blob/main/LICENSE)
 [<img alt="Discord" src="https://img.shields.io/discord/593655374469660673.svg?style=for-the-badge&label=Discord&logo=discord" height="20">](https://discord.gg/Q6A3YA2)
 
 [<img alt="Twitter" src="https://img.shields.io/twitter/follow/chainsafeth" height="20">](https://x.com/chainsafeth)