instantiates an object from class of createBasin
createBasin(name, simulation)
a string: a name for the basin
a list of simulation time and dates as below:
start
: the date which simulation starts, must be in 'YYYY-MM-DD'
format
start
: the date which simulation ends, must be in 'YYYY-MM-DD'
format
by
: the interval of each steps in seconds
a list: an object from class of creatBasin