membership recurring payments using Drupal webform
Documentation lives here: https://wiki.civicrm.org/confluence/plugins/servlet/mobile#content/view/120029195

In a nutshell - to integrate payment you need to create a civicrm contribution page - enable a payment processor. In the webform civicrm tab select this contribution page - this way webform civicrm will know that you want to process payments, what payment fields to display and which payment processor to connect with.

Re: recurring payment - to my knowledge you can't do this yet. I've started thinking about how to make that happen.