Fixing packaging error (missing __init__.py)

Hey,
after deploying in side-packages, xortool fails to import its modules (like xortool.colors) and fails. The reason was a missing __init__.py. Instead of having an empty one [1], i added the __all__ variable with all modules declared (which makes it also possible to use "from xortool import *").
Additionally i added a local copy of the MIT license (and fixed one of the headers) so the license does not have to be pulled from outside the tarball for correct packaging (hope thats fine for you?).

[1]: https://docs.python.org/2/tutorial/modules.html
PS: It would be awesome to get a 0.96 tag :+1: