Make iterating over jQuery objects possible using ES 2015 for-of:
for ( node of $( "<div id=narwhal>" ) ) {
console.log( node.id ); // "narwhal"
}
Fixes gh-1693
* Update "grunt-jscs-checker" package
* Use ".jscsrc" file instead of old ".jscs.json"
* Use jquery preset instead of explicitly defining all the jscs rules
