Move config file to `config` directory
Add config files from csscomb.php (close #91)

Add config files with sort order from previous (php) version of csscomb.
`default` is renamed to `zen`.
All other options (spaces, semicolons, etc.) are omitted.
Merge pull request #117 from csscomb/tg/config-files

Add config files from csscomb.php (#91)