Add LICENSE

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Add MANIFEST.in

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Add install_requires and tests_require

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Merge pull request #323 from ceph/pypi

Prepare for PyPI

Reviewed-by: Sage Weil <sage@redhat.com>