Link to User Guide more clearly from the README

[borkdude]

There is an excellent User Guide here: https://github.com/funcool/promesa/blob/master/doc/user-guide.md But this is not clear from the README. I think you should link to the User Guide as one of the first things :)

[niwinz]

It is linked here:

and here:

If you have better approach, I'm open to suggestions

[borkdude]

I mean specifically the User Guide

[niwinz]

yeah, I understand. I will put a direct link on te readme; thanks

[niwinz]

DONE

[borkdude]

Thanks!