Include asciicast in README

Add asciicast link to README for demonstration

Author: ewgsta

README.md

@@ -1,6 +1,7 @@
 <p align="center">
   <img src="https://8upload.com/image/a6cdd79fc5a25c99/wl-512x512.jpg" alt="Weeb CLI Logo" width="120">
 </p>
+[![asciicast](https://asciinema.org/a/8D0UCXJt2T4pwLKy.svg)](https://asciinema.org/a/8D0UCXJt2T4pwLKy)
 
 <h1 align="center">Weeb CLI</h1>