options trading

bobhk e3a4b61eab incorporating changes using observer pattern		%!s(int64=9) %!d(string=hai) anos
src	e3a4b61eab incorporating changes using observer pattern	%!s(int64=9) %!d(string=hai) anos
README.md	20ea61e7c4 Initial commit	%!s(int64=10) %!d(string=hai) anos

finopt