Safari CORs
This example works in Chrome and Firefox but will fail in Safari http://jsfiddle.net/9qxs5gdf/
Safari sends the origin header along with the first OPTIONS request. I'm wondering if the Dribbble API does not allow that header?
From Safari:
Access-Control-Request-Headers accept, authorization, origin
Saw a similar issue here: http://stackoverflow.com/questions/16824661/cors-request-not-working-in-safari