Add an optional feature for displaying the current Project.el project

[jawadcode]

I believe the current project can be obtained with (project-current), though I'm not sure about the intricacies of how this would work (like tracking changes in the current project, or if the command works outside of particular buffers), and I don't think my emacs lisp knowledge is fully there to implement this feature myself.

[Mstrodl]

See #89

[jawadcode]

See #89

That issue seems to be about projectile though?

[Mstrodl]

Sorry, I should've been more clear: I have a comment at the end: #89 (comment)

Especially in light of there being two packages that do pretty much the same thing, I think it makes more sense for a hook to be provided for users to provide data for state.

The original author didn't reply. I'd be happy to accept a PR that adds that hook functionality so it can fit both usecases (and more!)