Hello,
Thanks for this wonderful library!

I would like the library to support github trees, is it foreseen (https://developer.github.com/v3/git/trees/)?
For instance I need to retrieve this:
https://api.github.com/repos/calipho-sib/nextprot-docs/git/trees/master?recursive=1

If you would like I can try to implement this feature and I make a pull request?