changed help flag setup to use PersistenFlags so -h will be supported
changed help flag setup to use PersistenFlags so -h will be supported

k4rtik/cobra,sdomino/cobra,gosuri/cobra,anthonyfok/cobra,akutz/cobra,eparis/cobra,vikstrous/cobra,simlelievre/cobra,jrossi/cobra,bep/cobra,abhishekgahlot/cobra,nicrioux/cobra,jlowdermilk/cobra,fabianofranz/cobra,spf13/cobra,liggitt/cobra