Initialize the --help flag as late as possible
Initialize the --help flag as late as possible

This should let users overwrite it with something custom. Like the help
sub-command.

eparis/cobra,anthonyfok/cobra,vikstrous/cobra,abhishekgahlot/cobra,gosuri/cobra,liggitt/cobra,jrossi/cobra,akutz/cobra,spf13/cobra,sdomino/cobra,simlelievre/cobra