Claude Code plugin marketplace issues

First and foremost, the installation instructions in README.md are incorrect. It's supposed to be like this:

```bash
/plugin marketplace add ruvnet/claude-flow
```

Also, it looks like your repository isn't set up correctly to function as the `Claude Code plugin marketplace`.

I'm trying to add the marketplace, but I'm running into some issues.

> Failed to clone marketplace repository: Cloning into '/Users/ABC-XYZ/.claude/plugins/marketplaces/ruvnet-claude-flow'...

Start with README.md and verify the documented marketplace installation command against the issue's example. Then inspect the repository's Claude Code marketplace setup and reproduce the reported clone failure; done means the instructions are correct and the marketplace can be added successfully.

Written by the indexing model from the issue text.