Demo might be broken

[4F2E4A2E]

I just committed #8 and was wondering which output the cmd:
python demo.py image.jpg
should be, can you please explain? image.jpg is a simple image file containing a face. The script ran and nothing happens.

[Iacopo Masi]

The demo is currently working in the main branch. I saw your pull request in order to use python3 but I have not merged yet and moreover now we have some conflicts to resolve between branches. For now I will keep my current version coded for py27.

Thanks.