New Leaflet control: L.Control.AccordionLegend

Some time back I came up with a custom legend control for Leaflet. Unlike the basic L.Layers control, we wanted it to be really snazzy:

• The layer list broken into sections, not by basemap/overlay, but thematic similarity: Parks in a section, Admin Boundaries as a section, Health Statistics as a section, etc. And the sections should have accordion-style behavior: clicking a section title should expand and collapse, show only one section at a time so as not to overload the screen, and so on.
• Each layer has an opacity slider.
• Each layer has a legend.

So, here it is:
https://github.com/GreenInfo-Network/L.Control.AccordionLegend
http://greeninfo-network.github.io/L.Control.AccordionLegend/

Enjoy!