Braintree Payment for WP Invoice

I need a payment module for BrainTree created for Wp-Invoice. I have attached the invoice plugins, as well as the brain-tree php files to use. I want it to support the BrainTree Vault, as well as be able to choose if it should charge or authorize transactions. This shouldn't take long since the braintree php is written, it's just a matter of connecting it to Wp-Invoice.