Fix/license for cran

I'm not certain that this is the right incantation but taking a bit of inspiration from e.g. 

<http://cran.rstudio.com/web/packages/optparse/COPYRIGHTS>

I can offer this small patch to get things rolling again.


Gregory Jefferis

On 21 Aug 2014, at 18:29, trevorld <notifications@github.com> wrote:

> In DESCRIPTION:
> 
> >  License: MIT + file LICENSE
> > +Copyright: Original python appdirs module copyright (c) 2010 ActiveState
> Listing ActiveState in DESCRIPTION under ``role = "cph"`` is good for keeping CRAN happy. As Gregory points out the "Copyrights" field in DESCRIPTION is a good place for preserving all the short copyright notices like the ActiveState copyright notice which under the MIT license must be preserved somewhere or you could probably change file LICENSE to something like: YEAR: 2010, 2014 COPYRIGHT HOLDER: ActiveState, Hadley Wickham, RStudio which probably fulfills the spirit of the MIT

So is the consensus that it would be better simply to squash the license file back down to two lines as above? The copyright field in description would still give a bit more info. 

> Technically if people have been contributing code (4+ lines) to the project under the MIT license and not explicitly assigning copyright 

FWIW I hereby assign copyright of my portions of this code to Hadley Wickham, RStudio.