Mismatch between gh-pages & master files

[sudodoki]

Hi!

Right now there are differences between master and gh-pages example. Not sure how many there are, but I was trying to use gh-pages branch (as submodule) [which is my own issue for doing it wrong] with code from example and it turned out, that master is featuring
https://github.com/mtschirs/js-objectdetect/blob/master/examples/example_image.htm#L11-L13 (objectdetect.nose.js), which is not available in gh-pages branch.

Maybe, it would make sense to have some sort of Travis CI setup to push everything from master to gh-pages?
Or, maybe, it's possible to set gh-pages as default branch for the project so that all up-to-date code is in gh-pages branch & live examples on actual github pages?