Have the config option be loaded using JSCS's loader

[mikesherov]

Right now, despite JSCS being able to parse JSON files with comments (and in the future, YAML files), grunt-jscs-checker can only parse JSON files.

Rather than using grunt.file.readJSON, use jscs/lib/cli-config to load the config.

[mikesherov]

@gustavohenke ping. Can you take this one on, or would you like me to do this? It's pretty crucial.

[gustavohenke]

Yep, I'll do this within 3 hours, work is intense right now.
If you don't want to wait more, tell me, so I'll be waiting for the PR :)

[mikesherov]

@gustavohenke no problem. Work first! Just double checking on the status :-) I'll wait till you handle it. Once this is done, can we make a release?