Split code between ulanzi environment and awtrix_upgrade

Added BME280 sensor support for awtrix_upgrade.

Removed battery readings for awtrix_upgrade

Added DFMiniMp3 lib for replacing the Ulanzi buzzer in the future

lib/DFMiniMp3-1.0.7-noChecksums/README.md

@@ -0,0 +1,25 @@
+# DFPlayer Mini mp3
+
+[![Join the chat at https://gitter.im/DFMiniMp3/Lobby](https://badges.gitter.im/DFMiniMp3/Lobby.svg)](https://gitter.im/DFMiniMp3/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+[![Donate](https://img.shields.io/badge/paypal-donate-yellow.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=6AA97KE54UJR4)
+
+Library for the DFPlayer Mini Mp3 module  
+
+This library allows your Arduino project to control the DFPlayer Mini MP3 module.  It supports both hardware serial and software serial.  It was designed to fit in the smallest Arduino hardware by consuming less code and memory space than other libraries.   
+
+Please read the product link before connecting your module, it will save you alot of time and effort.  
+[DFRobot's DFPlayer Mini Mp3](http://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299)
+
+## Documentation
+[See Wiki](https://github.com/Makuna/DFMiniMp3/wiki)
+
+## Installing This Library (prefered, you just want to use it)  
+Open the Library Manager and search for "DFPlayer Mini Mp3 by Makuna" and install.
+
+## Installing This Library From GitHub (advanced, you want to contribute)  
+Create a directory in your Arduino\Library folder named "DfMiniMp3"  
+Clone (Git) this project into that folder.  
+It should now show up in the import list when you restart Arduino IDE.  
+
+