This is not how to include user submit files on a webform as attachments on an email, although mimemail will allow you to do that too. But rather the ability to send a single attachment to everyone who submits a specific webform.
I just released my first module on Drupal.org. It's pretty simple but I've begun using it on every site I setup now.
The URL Alias Permissions module allows site administrators to set permissions to create and edit url path settings by content type.
So this is my first post I figured a good place to start would be how to create a simple Drupal 7 module. I know there are many posts out there already about this but as many of my post will probably reference creating a simple module I figured it would be a good place to start that I can reference later.