Fixing edge case where wkhtmltopdf returns an exit code 2 on success too
Fixing edge case where wkhtmltopdf returns an exit code 2 on success too

birdy247/CakePdf,p-try/CakePdf,Laykou/CakePdf,burzum/CakePdf,FriendsOfCake/CakePdf,xyng/CakePdf,darkglamb/CakePdf