got the basic function for Optional, but the regex is still troubled, now is having...
-rw-r--r-- Changes
-rw-r--r-- MANIFEST.SKIP
-rw-r--r-- Makefile.PL
-rw-r--r-- README
drwxr-xr-x lib
drwxr-xr-x t-author
drwxr-xr-x t