Simple study for money and finance functions on TDD Method.

proof of concept tutorial for TDD development under autotools/cpp/boost about the work Financial Numerical Recipes in C ++. by Bernt Arne Ødegaard https://finance.bi.no/~bernt/gcc_prog/recipes/recipes/recipes.html

Version 0.0.1 - Must have a class Money implementing the properties: value as integer, currency symbol, face value with currency symbol as String, country and the method Money::exchange("currency_symbol") returning a new Money object.