Add README notice about release being older

Author: WebCoder49

README.md

@@ -1,5 +1,7 @@
 # code-input
 
+> **:warning: This document is a work in progress for the next release. [Read latest released instructions.](https://github.com/WebCoder49/code-input/tree/v2.5.1/README.md)**
+
 ![Click to Switch](https://img.shields.io/static/v1?label=&message=Click%20to%20Switch:%20&color=grey&style=for-the-badge)[![Website and Demos](https://img.shields.io/static/v1?label=&message=Website&color=black&style=for-the-badge)](https://code-input-js.org)[![GitHub](https://img.shields.io/static/v1?label=&message=GitHub&color=navy&style=for-the-badge&logo=github)](https://github.com/WebCoder49/code-input)[![Yarn](https://img.shields.io/static/v1?label=&message=Yarn&color=purple&style=for-the-badge&logo=yarn)](https://yarnpkg.com/package?name=@webcoder49/code-input)[![NPM](https://img.shields.io/static/v1?label=&message=NPM&color=red&style=for-the-badge&logo=npm)](https://www.npmjs.com/package/@webcoder49/code-input)
 
 [![View License](https://img.shields.io/github/license/webcoder49/code-input?style=for-the-badge)](LICENSE) [![View Releases](https://img.sHields.io/github/v/release/webcoder49/code-input?style=for-the-badge)](https://github.com/WebCoder49/code-input/releases)