Ld

* Fix not being able to read `/etc/` and yet able to read release files inside it.

* Add manual mapping for `redhatenterpriseserver` (previously only redhatenterpriseworkstation was mapped)
* Return empty information when failing to read a seemingly version related file due to IO or OS errors.
* When using the CLI without providing the -j flag, printout keys even if their values are empty.
* Replace nose with pytest
* Add RHEL5 test case
* Add OpenELEC test case
* Update supported Python versions (with py36)
* Update classifiers

- Add MANIFEST file (which also includes the LICENSE as part of Issue 139)
- Default to releasing using Twine (as per Issue 121)
- Update license in setup.py
- Test on py33, py36 and py3 based flake8
- Add setup.cfg file

- Prettify output when running `distro -j`
- Decode output of `lsb_release` as utf-8
- Mend code coverage
- Logger now uses `message %s, string` form to not-evaulate log messages if unnecessary
- Add landscape.io code-quality monitoring
- Add CONTRIBUTING.md

- Add a CLI and a `distro` entry point. For Python 2.6, argparse will be installed
- Add many test cases (e.g. Raspbian 8, CoreOS, Amazon Linux, Scientific Linux, Gentoo, Manjaro)
- Make distro non-importable on non-compatible platforms (e.g. Windows and tested via AppVeyor)
- Completely redo the testing framework to make it easier to add tests
- Remove six as a dependency
- Emit stderr if `lsb_release` fails
- Fix some encoding related issues
- We now use `bytes` invariantly
- Test on pypy

- Introduces a new name.
- No longer a package. `constants.py` has been removed and distro is now a single module.
- Documentation fixes.
- `distro.info()` now receives best and pretty flags.
- Added Linux Mint test case.
- Removed `get_` prefix from `get_*_release_attr` functions.
- Now testing on Python 3.4.
- Codename is now passed in `distro.info()`