Use jQuery bundled in core so you're always using the latest version
Use jQuery bundled in core
Also sanitize the company name
Route all AJAX calls through wp-ajax.php.
Don't need to reload WordPress in the AJAX call since it's already using WordPress to handle it. Remove override of content-type.
Sanitize the search query.
Merge pull request #4 from Automattic/vip-fixes

Some fixes made for inclusion into the VIP Shared Plugins repo