Update README.md

Author: snorklerjoe

README.md

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 # CubeServer-api-circuitpython
-[![Maintainability](https://api.codeclimate.com/v1/badges/368c4a6572655726b08a/maintainability)](https://codeclimate.com/github/snorklerjoe/CubeServer-api-circuitpython/maintainability)
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+[![Maintainability](https://api.codeclimate.com/v1/badges/0ed05bb07ca3c9678002/maintainability)](https://codeclimate.com/github/snorklerjoe/CubeServer-api-circuitpython/maintainability)
 
 The CircuitPython version of the data API wrapper for a high-school STEM competition