🧪 Beta release banner (#252)

README.md

@@ -14,6 +14,12 @@
   <a href="https://github.com/LayerZero-Labs/devtools/blob/main/DEVELOPMENT.md" style="color: #a77dff">Development</a> | <a href="https://github.com/LayerZero-Labs/devtools/blob/main/CHEATSHEET.md" style="color: #a77dff">Cheatsheet</a> | <a href="https://github.com/LayerZero-Labs/devtools/tree/main/examples" style="color: #a77dff">Examples</a>
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+---
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+**Please note** that this repository is in a **beta** state and backwards-incompatible changes might be introduced in future releases. While we strive to comply to [semver](https://semver.org/), we can not guarantee to avoid breaking changes in minor releases.
+
+---
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 ## Introduction
 
 This toolkit is designed to streamline the process of building, testing, and deploying omnichain applications (OApps) using LayerZero. This tool is meant to support you through the end-to-end development lifecycle of a cross-chain project.
@@ -36,7 +42,7 @@ Our example project offers templates for both the <a href="https://docs.layerzer
 
 ## Writing Unit Tests
 
-Testing your contracts is crucial. We support both <a href="https://hardhat.org/" style="color: #a77dff">Hardhat</a> and  <a href="https://book.getfoundry.sh/" style="color: #a77dff">Foundry</a> frameworks for writing and running unit tests for your LayerZero contracts.
+Testing your contracts is crucial. We support both <a href="https://hardhat.org/" style="color: #a77dff">Hardhat</a> and <a href="https://book.getfoundry.sh/" style="color: #a77dff">Foundry</a> frameworks for writing and running unit tests for your LayerZero contracts.
 
 Use `npx hardhat compile` or `forge build` to compile your smart contracts.
 
@@ -69,6 +75,7 @@ npx hardhat lz:oapp:wire
 By following these steps, you can focus more on creating innovative omnichain solutions and less on the complexities of cross-chain communication.
 
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 <p align="center">
   Join our community on <a href="https://discord-layerzero.netlify.app/discord" style="color: #a77dff">Discord</a> | Follow us on <a href="https://twitter.com/LayerZero_Labs" style="color: #a77dff">Twitter</a>
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