You can clone with
HTTPS or Subversion.
The general options as of now says :
-h, --help # Print generator's options and usage
-f, --force # Overwrite files that already exist
Adding some more options would help? Like -v, --version for version.
yo --version does work with the newer binary but we could add -v as an alias.
@addyosmani Okies, added the alias :)