code: function(args, done) {
    var dir = path.resolve(args['<directory>']);
    var pkg = require(path.join(dir, 'package.json'));
    var schema = Joi.object().keys({
      name: Joi.string().min(1).max(30).regex(/^[a-zA-Z0-9][a-zA-Z0-9\.\-_]*$/).required(),
      version: Joi.string().regex(/^[0-9]+\.[0-9]+[0-9+a-zA-Z\.\-]+$/).required(),
      description: Joi.string().max(80).required(),
      license: Joi.string().max(20).required(),
      homepage: Joi.string().uri({
        scheme: ['http', 'https']
      }).required(),
      main: Joi.string().optional(),
      repository: Joi.object().keys({
        type: Joi.string().valid('git').required(),
        url: Joi.string().uri({
          scheme: ['git', 'https']
        }).regex(/mongodb-js\/[a-zA-Z0-9\.\-_]+/).required()
      }),
      bin: Joi.object().optional(),
      scripts: Joi.object().optional(),
      bugs: Joi.alternatives().try(Joi.string(), Joi.object()).required(),
      author: Joi.string().required(),
      dependencies: Joi.object().required(),
      devDependencies: Joi.object().required()
    });
    Joi.validate(pkg, schema, {
      abortEarly: false,
      allowUnknown: true
    }, done);
  }
docs: Check package.json conforms