Update IRRemoteESP8266 version to 2.5.5

factorize IR send signal function between the 2 types of receiving
Add new IRRemoteESP8266 protocols
replace pins on mega according schema
remove unecessaries spaces

lib/IRremoteESP8266/examples/IRrecvDemo/IRrecvDemo.ino

@@ -3,7 +3,7 @@
  * This is very simple teaching code to show you how to use the library.
  * If you are trying to decode your Infra-Red remote(s) for later replay,
  * use the IRrecvDumpV2.ino example code instead of this.
- * An IR detector/demodulator must be connected to the input RECV_PIN.
+ * An IR detector/demodulator must be connected to the input kRecvPin.
  * Copyright 2009 Ken Shirriff, http://arcfn.com
  * Example circuit diagram:
  *  https://github.com/markszabo/IRremoteESP8266/wiki#ir-receiving
@@ -25,9 +25,9 @@
 
 // An IR detector/demodulator is connected to GPIO pin 14(D5 on a NodeMCU
 // board).
-uint16_t RECV_PIN = 14;
+const uint16_t kRecvPin = 14;
 
-IRrecv irrecv(RECV_PIN);
+IRrecv irrecv(kRecvPin);
 
 decode_results results;
 
@@ -38,7 +38,7 @@ void setup() {
     delay(50);
   Serial.println();
   Serial.print("IRrecvDemo is now running and waiting for IR message on Pin ");
-  Serial.println(RECV_PIN);
+  Serial.println(kRecvPin);
 }
 
 void loop() {