clarify that pytest.mark.parametrize() takes a list of argvalues and not just arbitrary iterators.  Addresses issue122.
clarify that pytest.mark.parametrize() takes a list of argvalues and not just
arbitrary iterators.  Addresses issue122.

skylarjhdownes/pytest,hunse/pytest,mhils/pytest,vmalloc/dessert,tomviner/pytest,vodik/pytest,markshao/pytest,mdboom/pytest,flub/pytest,inirudebwoy/pytest,oleg-alexandrov/pytest,icemac/pytest,rmfitzpatrick/pytest,abusalimov/pytest,gabrielcnr/pytest,nicoddemus/pytest,oleg-alexandrov/pytest,doordash/pytest,The-Compiler/pytest,jaraco/pytest,ojake/pytest,chiller/pytest,eli-b/pytest,ionelmc/pytest,ericdill/pytest,userzimmermann/pytest,Bachmann1234/pytest,takluyver/pytest,Carreau/pytest,chillbear/pytest,tgoodlet/pytest,JonathonSonesen/pytest,lukas-bednar/pytest,Bjwebb/pytest,takluyver/pytest,Akasurde/pytest,MengJueM/pytest,ericdill/pytest,gabrielcnr/pytest,pfctdayelise/pytest,bubenkoff/pytest,Haibo-Wang-ORG/pytest,tareqalayan/pytest,ghostsquad/pytest,MichaelAquilina/pytest,lukas-bednar/pytest,ropez/pytest,inirudebwoy/pytest,tomviner/pytest,omarkohl/pytest,nicoddemus/pytest,omarkohl/pytest,codewarrior0/pytest,Bachmann1234/pytest,The-Compiler/pytest,untitaker/pytest,jb098/pytest,hpk42/pytest,Bjwebb/pytest,doordash/pytest,MengJueM/pytest,hunse/pytest,hackebrot/pytest,pytest-dev/pytest,RonnyPfannschmidt/pytest,rouge8/pytest,Haibo-Wang-ORG/pytest,hpk42/pytest,chillbear/pytest,bukzor/pytest,jb098/pytest,rouge8/pytest,wfxiang08/pytest,icemac/pytest,mdboom/pytest,mbirtwell/pytest,codewarrior0/pytest,ionelmc/pytest,abusalimov/pytest,vodik/pytest,nicoddemus/repo-test,ghostsquad/pytest,alfredodeza/pytest,JonathonSonesen/pytest,userzimmermann/pytest,mhils/pytest,etataurov/pytest,davidszotten/pytest,txomon/pytest,malinoff/pytest,untitaker/pytest,mbirtwell/pytest,pelme/pytest,bubenkoff/pytest,nicoddemus/repo-test,Carreau/pytest,chiller/pytest,wfxiang08/pytest,pelme/pytest,ropez/pytest,bukzor/pytest,ddboline/pytest,ojake/pytest