more descriptions

README.md

 Warning: This code uses the 433,5 MHz as well as other potentially country-specific settings. Lookup if this is allowed in your country and change the details in src/PinedioLoraRadio.cpp!
 
+This is a heavily modified fork from https://codeberg.org/JF002/pinedio-lora-driver .
+
 # Board-Docs
 [LoRa USB adapter](https://wiki.pine64.org/wiki/Pinedio#USB_adapter)
 [Pinephone backplate](https://wiki.pine64.org/wiki/Pinedio#Pinephone_backplate).

testapp/README

+main: sends a Message and then constantly waits for messages
+Tx: constantly sends messages
+
+Call the executables: LD_LIBRARY_PATH=../src/ ./main