Updates pyld setup.py script, step to an upload to http://pypi.python.or...

The following procedure should allow you to upload **pyld** to the Python Package index repository.

Create an account on [PyPI](https://pypi.python.org/pypi), then upload **pyld** to PyPI using the following commands

```bash
$ python setup.py register
$ python setup.py sdist upload
```

Here is the documentation if you want additional information http://guide.python-distribute.org/contributing.html

Best regards