gistfile1.js

var authorize = function(username, key) {
    jQuery.ajaxSetup({
        beforeSend: function(xhr) {
            xhr.setRequestHeader('Authorization', 'ApiKey ' + username + ':' + key);
            return xhr;
        }
    });
};

authorize('amccloud', '204db7bcfafb2deb7506b89eb3b9b715b09905c8');