Throw better Exceptions

laravel/session/drivers/factory.php

@@ -33,8 +33,8 @@ class Factory {
 				return new Redis(Cache::driver('redis'));
 
 			default:
-				throw new \Exception("Session driver [$driver] is not supported.");
+				throw new \DomainException("Session driver [$driver] is not supported.");
 		}
 	}
 
-}
+}