Updated available drivers for mail.

app/config/mail.php

@@ -11,7 +11,7 @@ return array(
 	| sending of e-mail. You may specify which one you're using throughout
 	| your application here. By default, Laravel is setup for SMTP mail.
 	|
-	| Supported: "smtp", "mail"
+	| Supported: "smtp", "mail", "sendmail"
 	|
 	*/