Added initial leaflet plugin structure

  development #1
  * Create leaflet plugin structure.
Added initial leaflet plugin main file.
Currently encountering trouble with jquery prettyCheckables
Not all clicks on the visual input form does not seem to be triggering the html input form click.
as detailed in :
Simulate click() for jQuery Validation
https://github.com/arthurgouveia/prettyCheckable/issues/49
My current solution so far is to get the parent div and listen to all the clicks on that parents and its children. ongoing..
  development #2
  * Create Initial Prototype