fix issue587: claim only python2.6 compat in README/pypi project page, thanks sscarwell
fix issue587: claim only python2.6 compat in README/pypi project page, thanks sscarwell

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