More button


![homepage-more](https://cloud.githubusercontent.com/assets/1978880/5507963/ece50e26-879f-11e4-9e41-04344711e3d1.gif)

Pro-tip:-
```js
var delegate = new Delegate(document.body);
delegate.on('click', '.js-stream-more', function (evt, el) {
	evt.preventDefault();
	var stream = findAncestorByClassName(el, 'stream__row');
	var rowToShow = (el.getAttribute('data-row-before') + 1);
	var streamToShow = stream.querySelector('[data-row="' + rowToShow + '"]');
	streamToShow.classList.toggle('stream--hidden');
	el.textContent = (streamToShow.classList.contains('stream--hidden') ? 'Show more' : 'Show less');
});

function init(container) {
	delegate.root(container || document.body);
}
```