[cmake-developers] Clarify on the ways to contribute

[Sebastian Schuberth]

On Fri, Dec 11, 2015 at 2:35 PM, Brad King <brad.king at kitware.com> wrote:

> The mailing list is still the preferred method, but GitHub does not
> allow us to turn off PRs so we accept them for one-off simple changes.
> For larger changes we usually close the PR with a request to come here.

Thanks for the clarification. Still, I'd appreciate if this info went
into CONTRIBUTING.rst.

-- 
Sebastian Schuberth