Pybm3d

Fix issue with submodules not being included into the default release archive. We therefore add them manually.

The `v0.2.0` release of **PyBM3D** involves among other new features a complete overhaul of the package's file, test and installation structure.

New Features
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- Introduce a `README.rst` with installation instructions, better documentation and package status badges
- Add Python 2.7.X and 3.6 support for Linux and OSX tested with Travis CI and tox
- Restructure automated tests and add BM3D color denoising testing
- Improve installation process with pre-installation of required packages
- Add flake8 code quality checking
- Add `patch_size`, `verbose` and `clip` parameters

This is the initial public release of **PyBM3D** which represents the state of the project prior to a series of possibly API and backwards compatibility breaking changes. These changes will include major improvements such as a GPU accelerated version.

Current Features
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- Python bindings for [this](http://www.ipol.im/pub/art/2012/l-bm3d/) C++ implementation of BM3D with parameter options for `sigma`, `useSD_h`, `useSD_w`, `tau_2D_hard`, `tau_2D_wien`.
- Packaged and distributed with `distutils`
- Travis CI testing