Merge branch 'issue_4' into 'master'

.gitignore

MANIFEST.in

bob/db/ijba/__init__.py

bob/db/ijba/driver.py

bob/db/ijba/files.txt

bob/db/ijba/query.py

bob/db/ijba/reader.py

bob/db/ijba/scripts/evaluate_ijba.py

bob/db/ijba/scripts/score_generation.py

bob/db/ijba/test.py

doc/extra-intersphinx.txt

doc/index.rst

doc/nitpick-exceptions.txt

doc/py_api.rst

setup.py