Sample json test

gistfile1.json

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              72.83832550048828,
              19.087751137938948
            ],
            [
              72.83832550048828,
              19.123436401500417
            ],
            [
              72.89291381835938,
              19.123436401500417
            ],
            [
              72.89291381835938,
              19.087751137938948
            ],
            [
              72.83832550048828,
              19.087751137938948
            ]
          ]
        ]
      }
    }
  ]
}

Main blog post - https://github.com/blog/1576-gist-meets-geojson.
Created the json from - http://geojson.io/
Reference Example - https://gist.github.com/sshirokov/6168839/revisions