Missing support for requests from a Fragment.

[MikeWallaceDev]

Hi, I'm adding this in the issues, but really I'm letting you know in advance that I am going to be working on adding a constructor and some code in order to support requests from a Fragment. If all goes well I will soon be making a pull request and hope that you will be able to merge quickly so that I don't have to fork :) Thanks, -MIke

N.B. You can reach me on Telegram if you want to want together on this : @MikeWallaceDev

[smart-fun]

Hi Mike! Thanks for using Perm and proposing to improve it! I can't wait to see your changes ^^ Arnaud.