[Notifier] Add SmsMessage can have from documentation

Author: alamirault

notifier/texters.rst

@@ -23,7 +23,9 @@ you to send SMS messages::
                 // the phone number to send the SMS message to
                 '+1411111111',
                 // the message
-                'A new login was detected!'
+                'A new login was detected!',
+                // optionally, you can override default "from" in transports, it can also be a name
+                '+1422222222',
             );
 
             $sentMessage = $texter->send($sms);