Update examples

examples/BlynkClient/BlynkClient.ino

@@ -62,9 +62,12 @@ void setup()
   delay(3000);
 
   // Restart takes quite some time
-  // You can skip it in many cases
+  // To skip it, call init() instead of restart()
   modem.restart();
 
+  // Unlock your SIM card with a PIN
+  //modem.simUnlock("1234");
+
   Blynk.begin(auth, modem, apn, user, pass);
 }