Merge pull request #4594 from mputkowski/patch-sftp

Add SFTP to supported storage drivers

config/filesystems.php

@@ -37,7 +37,7 @@ return [
     | may even configure multiple disks of the same driver. Defaults have
     | been setup for each driver as an example of the required options.
     |
-    | Supported Drivers: "local", "ftp", "s3", "rackspace"
+    | Supported Drivers: "local", "ftp", "sftp", "s3", "rackspace"
     |
     */