Merge branch 'docs' into acpaquette-docs

ale/__init__.py

ale/drivers/__init__.py

ale/drivers/base.py

ale/drivers/cassini_driver.py

ale/drivers/lro_driver.py

ale/drivers/mdis_driver.py

ale/drivers/mro_driver.py

docs/source/conf.py

docs/source/index.rst

docs/source/library/capi/capi.rst

docs/source/library/capi/index.rst

include/ale.h

src/ale.cpp

tests/ctests/AleTest.cpp

tests/pytests/test_lro_drivers.py