createAreathis function constructs an object from class of createArea, supporting objects inherited from any of the folowing classes: createAquifer, createDemandSite, createDiversion, createJunction, createReservoir,and createRiver.
createArea(name, location, simulation)(optional) A string: the name of the aquifer
(optional) A string: the physical location of name
A list: simulation is a list of three vectors: start, end, and interval. the start and end components must be in 'YYYY-MM-DD' format. The interval component can takes either of 'day','week', or 'month'
An object from class of createArea