update setup.py for the mark package
update setup.py for the mark package

nicoddemus/pytest,The-Compiler/pytest,ddboline/pytest,davidszotten/pytest,nicoddemus/pytest,txomon/pytest,alfredodeza/pytest,tomviner/pytest,RonnyPfannschmidt/pytest,pfctdayelise/pytest,pytest-dev/pytest,hackebrot/pytest,The-Compiler/pytest,markshao/pytest,Akasurde/pytest,tomviner/pytest