Prints list of commands
Usage: help [-f|-ff|--non-interactive|--upgrade|--paths] [--show-all-options]
Options: -f Include a brief description of the commands -ff Get a complete description of all commands --non-interactive Display information on how to use MEGAcmd with scripts --upgrade Display information on PRO plans --paths Show caveats of local and remote paths --show-all-options Display all options regardless of platform