Merge pull request #52 from jmfee-usgs/update-docs

README.md

docs/DeltaF_usage.md

docs/README.md

docs/algorithms/DeltaF.md

docs/algorithms/DeltaF_usage.md

docs/algorithms/XYZ.md

docs/algorithms/XYZ_usage.md

docs/api.md

docs/develop.md

docs/images/architecture.png

docs/install.md

docs/io.md

docs/io/Edge.md

docs/io/Iaga2002.md

docs/usage.md

geomagio/edge/EdgeFactory.py

geomagio/iaga2002/IAGA2002Factory.py