Added comments

src/C++/Driver/src/Sensors.cpp

@@ -1,5 +1,5 @@
 #include <DHT.h>
-
+// define pins and type of DHT sensor
 #define DHTPIN 4
 #define DHTTYPE DHT11
 #define MQ5_PIN 2
@@ -19,7 +19,7 @@ void loop() {
   float t = dht.readTemperature();
   
   int mq5Value = analogRead(MQ5_PIN);
-
+  // if sensor isn't connected properly display error message
   if (isnan(h) || isnan(t)) {
     Serial.println("Fout bij het lezen van de sensor!");
     return;