Problem with check-more-types

``` sh
$ manpm check-more-types defend
{ [Error: check-more-types: package.json has no readmeFilename]
cause: [Error: check-more-types: package.json has no readmeFilename],
isOperational: true }
```

Start by reproducing `manpm check-more-types defend` and inspect the reported `package.json` metadata, especially the missing `readmeFilename`. Trace the command's check-more-types entry point and determine the expected behavior; done means the command no longer reports this error for the affected package.

Written by the indexing model from the issue text.