Add support for giving path to list

app/cmd/help

@@ -1,13 +1,13 @@
 #!/usr/bin/env bash
 cat << EOF
 Commands:
-* mountman list
+* mountman list [/path]
 List known block devices.
 
 * mountman plist [/path]
 List known block device(s), with technical information, parseable with bash.
 
-* mountman mount
+* mountman mount </path>
 Mount block device, returns the mountpoint's path.
 
 * mountman umount </path>

app/cmd/list

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 set +e
-bash "$APP_DIR/cmd/main" plist | while read mm_cmd; do
+bash "$APP_DIR/cmd/main" plist "$2" | while read mm_cmd; do
 	eval "$mm_cmd"
 	if ! [ "$mm_format" = "" ]; then
 		echo "[$mm_label] $mm_size - $mm_path ($mm_type/$mm_format)"