License file fix for #34

[glitchassassin]

Moves the license files to package_data instead of data_files

[skvark]

I think it would be better that the licenses stay in the root of this repository. By moving them to cv2 folder Github can't autodetect the license and it's harder to find them when they are "hidden".

No big changes needed, just copy the licenses to the cv2 folder during build process. This has to be done before setup.py is called.

And don't worry about the broken builds, I'm looking into that issue.

[glitchassassin]

Updated the travis yml file to copy those license files as part of the before_install step - does this work?

[skvark]

Yes, that should do it. Could you also add it to the Windows builds? New xcopy line to appveyor/build.cmd should be enough.

[glitchassassin]

Of course, forgot that setup.py needs it there either way. 🙄 My bad.

[skvark]

No problem and thanks :) I will merge this when I get the builds fixed.