Add pstore version 0.96 / migrate from SVN.

We're not adding the SVN repository history because it may contain
sensitive data.

The project already exists on [PyPI]/[PyPI2] and on [code.osso.nl].

[PyPI] https://pypi.python.org/pypi/pstore
[PyPI2] https://pypi.python.org/pypi/django-pstore
[code.osso.nl] https://code.osso.nl/projects/pstore/
Add .gitignore (and bump version to next dev version).
Remove references to the SVN binary and replace with GIT calls.