/**
     * Parsing the response from api.
     * TODO note to the backend - in response should be the coordinates of the returned area.
     * This would easiely allow you to detect any problems with the map (gps or network problem etc.)
     */
    public Roads parseRoads(String response) {
        Roads roads = new Roads();
        try {
            JSONArray ja = new JSONObject(response).getJSONArray(FEATURES);
            for (int i=0;i<ja.length();i++) {
                Road road = new Road();
                JSONObject jo = ja.getJSONObject(i);
                JSONObject geometry = jo.getJSONObject(GEOMETRY);
                JSONObject prop = jo.getJSONObject(PROPERTIES);
                if (prop.has(CATEGORY)) road.category =  prop.getString(CATEGORY);
                if (prop.has(DIRECTION)) road.direction = prop.getInt(DIRECTION);
                try {
                    if (prop.has(SPEED_LIMIT_ALONG)) road.speedLimitAlong = prop.getInt(SPEED_LIMIT_ALONG);
                } catch (Exception e) {
                    //e.printStackTrace();
                    road.speedLimitAlong = SPEED_LIMIT_NO_VALUE;
                }
                try {
                    if (prop.has(SPEED_LIMIT_AGAINST)) road.speedLimitAgainst = prop.getInt(SPEED_LIMIT_AGAINST);
                } catch (Exception e) {
                    //e.printStackTrace();
                    road.speedLimitAgainst = SPEED_LIMIT_NO_VALUE;
                }
                JSONArray cord = geometry.getJSONArray(COORDINATES);
                for (int j=0;j<cord.length();j++) {
                    double lon = cord.getJSONArray(j).getDouble(0);
                    double lat = cord.getJSONArray(j).getDouble(1);
                    road.coordinates.add(new Place(lon,lat));
                }
                roads.add(road);
            }
        } catch (JSONException e) {
            Log.e(TAG, "parseRoads: "+e.getMessage());
            e.printStackTrace();
        }
        return roads;
    }