setup.py: build long_description from README's content

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
setup.py: make download_url active only on "full" releases

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Bump version to 0.1.1

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>