Add __init__.py to make it a valid package

I want to use mpyq as a (git) submodule in my project, but for this, it needs the __init.py__. Installing it via the setup.py is not my desired way, because for production use, it needs to be installed on all machines and if you release a new version, the update process is more complicated. If I add it as a submodule, I can easily pull your changes and push them live to the production servers.
Would be nice if you could add this, so it's recognized as a python package.