on Xcode 5.1, setting env variables is changed from setenv to export
add test for “on Xcode 5.1, setting env variables is changed from setenv to export”
add test for "on Xcode 5.1, setting env variables is changed from setenv to export"
Merge pull request #341 from yuichi-hamasaki/master

on Xcode 5.1, setting env variables is changed from setenv to export