Fix "$ is undefined" error with setTimeout call when jQuery is in noConflict mode.

Calling resizeIframe with setTimeout using the function reference, not a string which will be evaluated in the global context (see https://developer.mozilla.org/en-US/docs/Web/API/window.setTimeout?redirectlocale=en-US&redirectslug=DOM%2Fwindow.setTimeout#Passing_string_literals).
Merge pull request #16 from ThibWeb/patch-2

Fix setTimeout call when jQuery is in noConflict mode.