'Option Default Values' section of README is out of date

[joachim-n]

Steps to reproduce

The 'Option Default Values' section says:

The $options array must be an associative array whose key is the name of the option, and whose value is one of:

but that contradicts 'Example Annotated Command Class'.

It looks like it's still documenting the legacy format, however in the document structure it's not below 'Legacy Annotated Command Methods' but a top-level section.