changed title which appears on the OC modules page
updated readme file to reflect change
changed location for tracking ecommerce order; fixes issue #8.
order tracking now called in catalog/controller/checkout/success.php
note: duplicates code already on the success.php page to allow it to work on OC v1.5.6 which has this code removed.
note2: change means the order is not technically confirmed as paid when tracked, but avoids issue with order being attributed to the IP of a payment processor (see issue 8).