Call jQuery.noConflict() earlier. Fixes #35

I was bitten by issue #35 despite the jQuery.noConflict() call. It appears that the check for jQuery.fn.oembed already initializes jQuery, so the noConflict() call came too late. Moving the call as in this patch does actually fix the issue.
Merge pull request #40 from jomz/patch-1

Call jQuery.noConflict() earlier. Fixes #35