Add note about README animation

Author: WebCoder49

README.md

@@ -13,6 +13,8 @@ Demos and usage instructions are available at <https://code-input-js.org> and [t
 
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+A lightweight setup like the animation below is still the default for `code-input.js`, but a wide range of plugins are available to modularly and progressively enhance the experience - see [the website](https://code-input-js.org) for interactive demos!
+
 ![Using code-input with many different themes](https://user-images.githubusercontent.com/69071853/133924472-05edde5c-23e7-4350-a41b-5a74d2dc1a9a.gif)
 *This demonstration uses themes from [Prism.js](https://prismjs.com/) and [highlight.js](https://highlightjs.org/), two syntax-highlighting programs which work well with and have compatibility built-in with code-input.*