Update README.md

Author: ckoever

README.md

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 # [micropython-firebase-realtime-database](https://github.com/ckoever/micropython-firebase-realtime-database)
-**Firebase implementation** based on [REST API](https://firebase.google.com/docs/reference/rest/database) optimized for the [ESP32 version of Micropython](https://github.com/micropython/micropython-esp32) based on [firebase-micropython-esp32](https://github.com/vishal-android-freak/firebase-micropython-esp32) from vishal-android-freak. It shouldn't be a problem to run it on other Micropython platforms. **A board with PSRAM is recommended.**
+**Firebase implementation** based on [REST API](https://firebase.google.com/docs/reference/rest/database) optimized for the [ESP32 version of Micropython](https://github.com/micropython/micropython-esp32) based on [firebase-micropython-esp32](https://github.com/vishal-android-freak/firebase-micropython-esp32) from vishal-android-freak. It shouldn't be a problem to run it on other Micropython platforms. **A board with SPIRAM is recommended.**
 
 
 ### Commands that are implemented