Added setClock() instruction

To ensure certificate validation, WiFiClientSecure needs time updated

Author: cotestatnt

examples/OTAupdate_ESP8266/OTAupdate_ESP8266.ino

@@ -41,6 +41,10 @@ void setup() {
 		delay(100);
 	}
 
+	// To ensure certificate validation, WiFiClientSecure needs time updated
+  // myBot.setInsecure(false);
+  myBot.setClock("CET-1CEST,M3.5.0,M10.5.0/3");
+	
 	// Set the Telegram bot properies
   myBot.setUpdateTime(1000);
   myBot.setTelegramToken(token);