updated examples to new site spec

etc/examples/1-hazard-curve/README.md

etc/examples/2-custom-config/README.md

etc/examples/2-custom-config/config.json

etc/examples/3-sites-file/README.md

etc/examples/3-sites-file/config.json

etc/examples/3-sites-file/sites.csv

etc/examples/3-sites-file/sites.geojson

etc/examples/4-hazard-map/README.md

etc/examples/4-hazard-map/config.json

etc/examples/4-hazard-map/map.geojson

etc/examples/5-complex-model/README.md

etc/examples/5-complex-model/config-map.json

etc/examples/5-complex-model/config-sites.json

etc/examples/5-complex-model/map.geojson

etc/examples/5-complex-model/sites.geojson

etc/examples/6-enhanced-output/README.md

etc/examples/6-enhanced-output/config.json

etc/examples/6-enhanced-output/sites.geojson

src/org/opensha2/calc/Sites.java

src/org/opensha2/geo/Region.java