0.9.2 We completed the call and put options prices (for American) in the function  BscdOptionPrice(). We added ONE (1) internal function BscdPayTwoLeafAMtx() that could be used evaluate the price of an American option. Also, we compared our option prices (for American) from function BscdOptionPrice() with the output of function BinomialTreeOption() from library(fOptions). Todo: test script.