docs: demo link

Author: privatenumber

README.md

@@ -13,7 +13,7 @@ The intuitive command-line interface (CLI) development tool.
 - Command support
 - Help documentation generation (customizable too!)
 
-→ Try it out online
+→ [Try it out online](https://stackblitz.com/edit/cleye-demo?devtoolsheight=50&file=examples/greet.ts&view=editor)
 
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