Not adding the README.md file (was working in old versions)

[Ziv-Barber]

    jsdoc: {
        dist: {
            src: [
                'gruntfile.js',
                'index.js'
            ],
            options: {
                'destination': 'doc',
                'package': 'package.json',
                'readme': 'README.md'
            }
        }
    }
});

But when I generating the docs I can see only the source code of index.js instead of the README.md file.
It was working in the old versions. Not working in 2.10.