Updated the app source file to add support to the RFM95W LoRa module. The gateway is now able to handle packets received by LoRa sensors. LoRa settings are : SF 10, 868Mhz band, CRC enabled

src/libs/PCF8574/PCF8574.h

@@ -25,11 +25,13 @@ class PCF8574
     void togglePin(Pin pin);
     // Reset the IRQ by doing a dummy read
     void resetIRQ();
+
   private:
     TwoWire &_twc;
     uint8_t _address;
     uint8_t _pinConfig;
     uint8_t _pddr;
+
   protected:
 };