Adding GeoCoordinates queries to address #100

[iannesbitt]

This PR adds queries that should match the following spatialCoverage definition in a schema.org JSON-LD. It also adds a test file and accompanying systemmetadata.

    "spatialCoverage": {
      "@type": "Place",
      "geo": [
        {
          "@type": "GeoCoordinates",
          "latitude": "36.7016",
          "longitude": "-121.90504"
        },
        {
          "@type": "GeoCoordinates",
          "latitude": "36.837017",
          "longitude": "-121.88215"
        },
        {
          "@type": "GeoCoordinates",
          "latitude": "36.873",
          "longitude": "-122.03484"
        },
        {
          "@type": "GeoCoordinates",
          "latitude": "37.04653",
          "longitude": "-122.404"
        }
      ]
    },

I once again need help testing this as I don't know how to get it set up myself.