export use_directory()

[s-fleck]

Could you please export use_directory()? I know that its pretty simple, but useful if you want to create your own use_* functions. If you decide that that this is a good idea, I can write the roxygen for it.

[hadley]

Are you still interested in this? A PR would be great.

[s-fleck]

submitted a pull request

[s-fleck]

Sorry for forgetting to document path; hope everything is fixed now

[hadley]

I think you forgot to push or otherwise update the PR - #44 hasn't changed