Commands:
ls list all the registries
current show current registry name
use <registry> change registry to registry
add <registry> <url> [home] add one custom registry
home <registry> [browser] open the homepage of registry with optional browser
del|rm <registry> delete one custom registry
help print this help
test [registry] show response time for specific or all registries
Options:
-h, --help output usage information
-V, --version output the version number