update for brownie repo deprecation (#59)

* update for brownie repo deprecation

* fix typo

README.md

@@ -1,7 +1,12 @@
-> NOTE: The new default is Sepolia.
+> ⚠️⚠️⚠️
+> This repo uses the eth-brownie development toolkit which is [no longer maintained by its creators](https://github.com/eth-brownie/brownie?tab=readme-ov-file#brownie).
+> Therefore this repo is not maintained actively either.
+> we recommend you check out the [Chainlink starter kits](https://github.com/smartcontractkit/starter-kits) to find other repos that you can use to
+> get started quickly. We recommend the use of the Hardhat or Foundry starter kits for most use cases.
 
 # chainlink-mix
 
+> NOTE: The new default is Sepolia.
 > NOTE: This has been recently updated for better compatibility with local blockchains. Check out the scripts to learn more.
 
 <br/>