Android, polylines and polygons

This is a breaking change release

• Adds support for Android #97
• Adds support for polylines and polygons on both platforms #95
• The annotations object has change:
  • Either point, polyline or polygon is required.
  • Removed latitude and longitude and replaced with coordinates. For point this a single array. For polylines and polygons, this an array of arrays.

Known issues

• [Android] Popups do not open when clicked #102
• [Android] showsUserLocation shows users location fixed in upper left corner #103