Missing objects are not causing errors

[coryvirok]

var assert = require('assert');
var Validator = require('./lib/validator');

var schema = { 
  required: true,
  type: 'object',
  properties: {
    foo: {
      type: 'object',
      required: true
    }   
  }
};

var validator = new Validator();
var errors = validator.validate({}, schema);
assert(errors.length);

The pull request adds in a check in validateObject() which checks to see if it's required before exiting the function. If it is and the instance is not defined, an error will be added.

[tdegrunt]

One thing less to implement, thank you! I've bumped the version to 0.1.3 and published.

[coryvirok]

Thanks Ted and thanks for the great library! We're making heavy use of it in http://ratchet.io :)