Investigate the cache with emacs integration

[jimhester]

I was getting some errors until I turned off caching.

[jimhester]

This is still broken, needs to be fixed!

[dankessler]

I know this is old, but perhaps it's related to this issue

[dankessler]

I think this is the issue described in the (now-closed) #308. I think that editing this line to include recursive = TRUE would address the problem where it's unable to create the cache because the ~/.R directory does not yet exist.

It's a pretty trivial change, but I'd be happy to more thoroughly test it and submit a PR if this approach is welcome.

[jimhester]

Sure happy for a PR if you think that solves the issue