First version. Allows to initialize the map and draw.
Simple definition for drawing modes.
Allows defining the drawing modes for the zones without using the google maps objects via the option drawingModes: [value1,..,valuex].
Simple definition for drawing modes and function for restarting the drawings.
Allows defining the drawing modes for the zones without using the google maps objects via the option drawingModes: [value1,..,valuex] also added some documentation
and changed some default values.
Added support for defining 'predefined zones'.
Predefined zones are defined in initialization and presented to the user to be selected.