Add config files from csscomb.php (#91)

I need config issues to be closed in order to update plugins, so here you are.
Issue #91, should be reviewed and merged first.

1. Move `.csscomb.json` to `config` directory.
Note that the file is no longer hidden as it's located in a special directory now.

2. 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.

![cat_vs_octopus-87637](https://f.cloud.github.com/assets/872004/1592295/e4bfe256-52b8-11e3-86b1-f96400af4a9d.gif)