added a simple example
added a simple example

EntilZha/ScalaFunctional,EntilZha/PyFunctional,lucidfrontier45/ScalaFunctional,lucidfrontier45/ScalaFunctional,EntilZha/ScalaFunctional,EntilZha/PyFunctional,ChuyuHsu/ScalaFunctional,ChuyuHsu/ScalaFunctional