menu improvement: Increase the delay time to hide the menu

[ryupanqui]

I suggest add a menu property to define the delay time in milliseconds to hides the menu when mouse exits it, default in 100. Something like 'delayOnHideMenu' property:

Code:

.bind("mouseleave.menu", function() {
	if (_3b7.options.hideOnUnhover) {
		_3b7.timer = setTimeout(function() {
			_3b8(_3b6);
		// - BEGIN EDIT
		}, _3b7.options.delayOnHideMenu);
		//},100);
		// - END EDIT
	}
});