Update README.md

Author: PerfecXX

README.md

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 # MicroPython-GoogleSheet
 
-[![Version](https://img.shields.io/badge/version-0.0.2-blue.svg)](https://github.com/yourusername/netpie-python-library)
+[![Version](https://img.shields.io/badge/version-0.0.3-blue.svg)](https://github.com/PerfecXX/MicroPython-GoogleSheet)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://opensource.org/licenses/MIT)
 
 Update or append the data to Google Sheet, or get the data on Google Sheet.