Just a little cleanup

* Moved that string replace to a function
* Shifted some logic around
Change config file to JSON instead of CoffeeScript

I think it reads better this way - a little cleaner

Also moved all config to that file and added closeOn so people can
customize a little more.
Update README

* Recognize contributions. Thanks @tlianza!
* New config style
It's 2013 now
We 2.2.0 now
I should have known better than to comment JSON
2.2.1 for a bugfix in the config file