Merge pull request #65 from jmfee-usgs/refactor-algorithm-arguments

docs/algorithms/DeltaF_usage.md

docs/algorithms/XYZ_usage.md

docs/api.md

docs/usage.md

geomagio/Controller.py

geomagio/__init__.py

geomagio/algorithm/Algorithm.py

geomagio/algorithm/AlgorithmException.py

geomagio/algorithm/DeltaFAlgorithm.py

geomagio/algorithm/XYZAlgorithm.py

geomagio/algorithm/__init__.py

setup.py

test/Controller_test.py

test/__init__.py

test/algorithm_test/Algorithm_test.py

test/algorithm_test/XYZAlgorithm_test.py

test/algorithm_test/__init__.py

test/edge_test/__init__.py

test/iaga2002_test/__init__.py

test/imfv283_test/__init__.py