Adding blurb about using pytest runner and cx_freeze
Adding blurb about using pytest runner and cx_freeze

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branch : cx_freeze-docs

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