Print debug and transmit message on same line

Transmitter/src/main.cpp

@@ -9,7 +9,7 @@ Button _button(13, &sendOnSignal, &sendOffSignal);
 unsigned int _counter;
 
 void sendSignal(int value){
-	Serial.println("Transmitting: ");
+	Serial.print("Transmitting: ");
 	char msg[9];
 	sprintf(msg, "LED On: %d", value);
 	Serial.println(msg);