Update README.md

Author: ezratweaver

README.md

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 ### **Python-Tkinter Math Flash Cards Release v0.2.2**
 
+**New and Improved GUI, New Sounds!**
 
+This version brings a new, better looking GUI, as well as new sounds! This code is very inefficient and simplistic, but it works! 
 
 ![Screenshot 2023-02-18 140758](https://user-images.githubusercontent.com/101545981/219890064-0ba1d38d-56bd-4d2d-af85-1a0ee0cbebd5.png)
 ![Screenshot 2023-02-18 140809](https://user-images.githubusercontent.com/101545981/219890081-3a569def-9e3f-48bb-9e0e-aa0b19d14d5c.png)