Updated testing documentation with tox
Updated testing documentation with tox

elpoisterio/eve,julianhille/eve,amagdas/eve,pjs7678/eve,mugurrus/eve,EasonYi/eve,superdesk/eve,opticode/eve,yanyanqin/eve,kalbasit/eve,kidaa/eve,eduardomb/eve,matthieuprat/eve,sebest/eve,hustlzp/eve,jzorrof/eve,stratosgear/eve,bcrochet/eve,mcreenan/eve