streamline github dev process

[Joshua Root]

On 2017-6-1 08:19 , Helmut K. C. Tessarek wrote:
> I would like that the buildbots are triggered for a PR. only when my PR
> is commited, I can see, if the build actually works. it should be the
> other way around: I should be able to verify that the PR really does
> what it is intended to do (since we do not have direct access to the
> build machines to test stuff).

Our current buildbot set-up is not well-suited for this. We have a GSoC 
project under way to test macports-ports PRs with Travis CI, which uses 
a clean VM for each build and has existing integration with GitHub.

- Josh