Add Python documents
Merge branch 'issue-446-api-docs' of github.com:rethinkdb/docs into issue-446-api-docs

Conflicts:
	api/python/geospatial/circle.md
	api/python/geospatial/distance.md
	api/python/geospatial/fill.md
	api/python/geospatial/geojson.md
	api/python/geospatial/get_intersecting.md
	api/python/geospatial/get_nearest.md
	api/python/geospatial/includes.md
	api/python/geospatial/intersects.md
	api/python/geospatial/line.md
	api/python/geospatial/point.md
	api/python/geospatial/polygon.md
	api/python/geospatial/polygon_sub.md
	api/python/geospatial/to_geojson.md