use_course()

[jennybc]

Grabs a course's-worth of material from DropBox or GitHub (as zip archive), saves to a reasonable place, unpacks it, opens RStudio Project in that place opens directory.

cc @jaredlander

[hadley]

I think this is fairly straightforward:

1. Download with download.file()
2. Unzip to desktop (?) with unzip() and print message
3. browseUrl() on the downloaded directory, so that it opens in finder/explorer.

[hadley]

Oh this will be more complicated than I was thinking because you need to figure out how to go from dropbox directory to zip file download (or from github page to equivalent)

[jaredlander]

Another complicating factor is that a lot of companies now use Box or Dropbox as their Documents folder which is often the only directory to which users have write access. And I've seen Box/Dropbox not play well with RStudio projects and with Git.

[jennybc]

We will definitely separate the acquisition + unpacking of files from making the folder into an RStudio Project and/or a Git repo. This has pedagogical value (to do those things explicitly) and, as you @jaredlander point out, it may also be very pragmatic.