title: get excel application version using office.js file
body: <p>I am developing office addin using office.js.
  How to get desktop excel application version using office.js, this is required because, we have noticed sometime user has old version of office and not all the latest updates are updated. in that case few of the office.js apis are not working. we want to show minimum version (including build no) required message to customer on office addin taskpane.</p>