Added doctests.
Merge branch 'master' of https://github.com/roed314/OMS
Merge branch 'master' of https://github.com/roed314/OMS
Merge branch 'master' of https://github.com/roed314/OMS
Merge branch 'master' of https://github.com/roed314/OMS
Merge branch 'master' of https://github.com/roed314/OMS
Merge branch 'master' of https://github.com/roed314/OMS
Merge branch 'master' of https://github.com/roed314/OMS
Finished docstrings.