added enum34 to travis
added enum34 to travis

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