updateURL = function (anchor, isNum, options) {

		// Bail if the anchor is a number
		if (isNum) return;

		// Verify that pushState is supported and the updateURL option is enabled
		if (!history.pushState || !options.updateURL) return;

		// Update URL
		history.pushState(
			{
				smoothScroll: JSON.stringify(options),
				anchor: anchor.id
			},
			document.title,
			anchor === document.documentElement ? '#top' : '#' + anchor.id
		);

	}
Update the URL
@param  {Node}    anchor  The anchor that was scrolled to
@param  {Boolean} isNum   If true, anchor is a number
@param  {Object}  options Settings for Smooth Scroll