Add JSCS config file

Don't merge yet - feedback wanted.

JSHint people want to focus on syntax linting and are dropping style oriented
options. They recommends using JSCS (in addition to JSHint) for style:
https://github.com/jshint/jshint/issues/1339

JSCS has recently added the options dropped from JSHint.
https://github.com/mdevils/node-jscs/issues/102

This commit contains a JSCS config file with some basic settings that generate
very few errors with the existing cordova-cli and lib code.

Would be glad to get some feedback about this. My goal is to eventually run
JSCS together with JSHint as part of `npm test`. The nice thing about JSCS
is that style flame wars can be way more structured with it as we can argue
about very specific well named JSCS config options :)

I'm using it with SublimeLinter-jscs
https://sublime.wbond.net/packages/SublimeLinter-jscs