CC Avenue and PayU Payment gateway integration For CS Cart 4

Need a smart developer to install CC Avenue and PayU (Indian Version) payment gateways on our CS cart 4. We are signed-up with the both of payment gateways. 1. Payment gateways must be installed as per CS Cart 4 version documentations.([login to view URL]). 2. If the payment is made successfully by the customer then the order status should be automatically changed to "Processed" and in case if payment is failed or cancelled then order status should be changed as "Cancelled" or "Failed". 3. We will release the final payment after two days testing of the project, within this testing period if everything is working properly then we will make the final payment else the developer has to rectify the problem if any related to work done by him. 4. Once the project is done we should be provided full detailed documentation before we release the final payments like what files, codes, folders or My-SQL queries are changed, added or removed so we can keep the changes safe while updating the software with the future release of CS Cart.