Create README.md

Author: TheKitty

CPX_Simon_Game/README.md

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+## Code for the Adafruit Learning System guide Simon Game Clone with Circuit Playground Express and CircuitPython
+
+See the full tutorial at https://learn.adafruit.com/simon-game-clone-with-circuitplayground-express-and-circuitpython/
+
+The **code.py** file should be copied onto the **CIRCUITPY** flash drive that appears 
+when you plug the CircuitPlayground Express into your computer via a known 
+good USB cable. 
+
+If the only drive name you get is named **CPLAYBOOT**, CircuitPython may not be loaded 
+on the board. You can load CircuitPython  
+[per this guide](https://learn.adafruit.com/adafruit-circuit-playground-express/circuitpython-quickstart). 
+Then you should be able to see the **CIRCUITPY** drive when connected via USB.
+
+CircuitPython resources are at https://CircuitPython.Org/
+
+Guide by Miguel Grinberg for Adafruit Industries. 
+
+MIT License, please attribute.
+
+Support Open Source development by buying your materials at [Adafruit.com](https://www.adafruit.com/).