Controlling LED with your smartphone with Blynk

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

#define BLYNK_PRINT Serial
char auth [] = "Token";
char ssid [] = "ssid";
char pswd [] = "pswd";
void setup() {
  Serial.begin (9600);
  Blynk.begin (auth,ssid,pswd);

}

void loop() {
  Blynk.run ();

}