[firebase] push with priority

[Costas]

PHP 

var myObj = JSON.stringify({name: 'My Name', address: 'My Address', '.priority': 123});
$.post('http://demo.firebase.com/demo/testing.json', myObj);

javascript

	var add2DB = new Firebase(url);

	vat itemOBJ = {
		title : $('#oCATEGORY_name').val(),
		logo : $('#oCATEGORY_logo').val(),
		'.priority' : $('#oCATEGORY_date').val()
		}

	add2DB.push(itemOBJ)