code: function tileToGeoJSON(tile) {
      var bbox = tileToBBOX(tile);
      var poly = {
          type: 'Polygon',
          coordinates: [[
              [bbox[0], bbox[1]],
              [bbox[0], bbox[3]],
              [bbox[2], bbox[3]],
              [bbox[2], bbox[1]],
              [bbox[0], bbox[1]]
          ]]
      };
      return poly;
  }
docs: Get a geojson representation of a tile
  
  @name tileToGeoJSON
  @param {Array<number>} tile
  @returns {Feature<Polygon>}
  @example
  var poly = tileToGeoJSON([5, 10, 10])
  //=poly