twitter/twemoji ? reverse-engineered prompt

Build me a simple Twemoji website that shows what this library does and how to use it.

I want a clean homepage with a short explanation that it turns normal Unicode emoji into Twitter style emoji images so they look the same across platforms. Include a few clear examples, like text with emoji before and after parsing, and a small live demo where I can type or paste text and see the emoji replaced on the page.

Also add a section for the basic usage with a copyable script tag, a note about using the latest version from a CDN, and a simple code example for parsing the page. If it makes sense, include a small area for the helper functions that convert code points back and forth.

Keep it lightweight, responsive, and easy to read, with the Twemoji look and feel. Use the existing project files and look up current docs online if you need to.