Styling

[jbelien]

Currently, only the color property is supported.
Could be extended to something similar to http://geojson.io/ :

• Point
  • marker-color
  • marker-size
  • [marker-symbol]
• Line
  • stroke (color)
  • stroke-width
  • stroke-opacity
• Polygon
  • stroke (color)
  • stroke-width
  • stroke-opacity
  • fill (color)
  • fill-opacity