title: Moment.js - how do I get the number of years since a date, not rounded up?
body: <p>I'm trying to calculate a person's age using <a href="http://momentjs.com/" rel="noreferrer">Moment.js</a>, but I'm finding that the otherwise useful <a href="http://momentjs.com/docs/#/displaying/fromnow/" rel="noreferrer">fromNow</a> method rounds up the years. For instance, if today is 12/27/2012 and the person's birth date is 02/26/1978, <code>moment("02/26/1978", "MM/DD/YYYY").fromNow()</code> returns '35 years ago'. How can I make Moment.js ignore the number of months, and simply return the number of years (i.e. 34) since the date?</p>