How to include License with wordpress plugins file

I want to upload my wordpress plugins on codecanyon. So, all I want to know that how can I upload license files for my assets with this plugins.

And also want to know that how can I include Apache 2.0 license with my asset, which I’ve taken from a github repository.

Envato adds the required license to the sale of your item… based on the marketplace/category and the specific license the customer is buying. The buyer can then download the applicable license on their download page.

Not sure about the Apache thing though… I’m assuming it’s unrelated to the Native American tribe or the helicopters.