added Name func to ID

internal/types/id.go

@@ -80,6 +80,11 @@ func (i ID) Parent() *ID {
 	return parent
 }
 
+// Name returns filename or directory name
+func (i ID) Name() string {
+	return filepath.Base(i.Key)
+}
+
 // ParseID parses a string to an ID. Null if invalid
 func ParseID(id string) *ID {
 	match := idRegex.FindStringSubmatch(id)