RegularPolygonMarker needs a docstring

[ocefpaf]

Things like opacity and fill_opacity, color and fill_color requires better explanation.

class RegularPolygonMarker(MacroElement):
    def __init__(self, location, popup=None,
                 color='black', opacity=1, weight=2,
                 fill_color='blue', fill_opacity=1,
                 number_of_sides=4, rotation=0, radius=15):
        """
        TODO docstring here

        """

Reference: https://github.com/humangeo/leaflet-dvf/wiki/6.-Markers

@jelmelk is this something you are willing to do?

[ocefpaf]

Also, the mapping from the old to the new syntax might help to sort this out.

        marker = RegularPolygonMarker(location,
                                      popup=popup_,
                                      color=line_color,
                                      opacity=line_opacity,
                                      weight=line_weight,
                                      fill_color=fill_color,
                                      fill_opacity=fill_opacity,
                                      number_of_sides=num_sides,
                                      rotation=rotation,
                                      radius=radius)

[BibMartin]

Fixed by #282. Closing this.