i thought about that, but in order to contribute, your own forks travis build should have to pass. I dont have the contributing doc up yet but it will say that. and most likely for us that will just be a human review as well as phpunit/phpcs, which does not require any kind of make like script. if they want doc in pretty html they can generate it easily, if they want to run other tools they can. people dont need a phing because their travis will run the build.