Removed example files (can be recovered later)

Now it compiles with test main code

src/main.cpp

@@ -0,0 +1,38 @@
+#include <Arduino.h>
+#include <RS485_Driver.h>
+
+void setup() { 
+  bool success = true;
+  auto bus = drivers::MODBUS(9600, SERIAL_8N1);
+  const uint8_t devAddress(0x01);
+  const uint8_t baseRegister(0x02);
+
+  log_i("Write single coil");
+  success &= bus.writeCoil(devAddress, baseRegister, true);
+  success &=bus.writeCoil(devAddress, baseRegister, false);
+
+  log_i("Write multiple coils");
+  const uint16_t coilsNum(32);
+  std::vector<bool> coilsValues(coilsNum, false);
+  bool v=true;
+  for (auto i(0); i < coilsNum; i++) {
+    coilsValues[i] = v;
+    v=~v;
+  }
+  success &=bus.writeCoils(devAddress, baseRegister, coilsValues);
+
+  log_i("Write single register");
+  success &=bus.writeRegister(devAddress, baseRegister, 0xAA);
+  
+  log_i("Write multiple registers");
+  const uint16_t regNum(16);
+  std::vector<uint16_t> regValues(regNum, 0);
+  for (uint16_t i(0); i < regNum; i++) {
+    regValues[i] = i*2;
+  }
+
+}
+
+void loop() {
+
+}