title: Parse REST how to create object with user pointer?
body: <p>Using <strong><a href="https://github.com/shiki/kaiseki" rel="nofollow">shiki/kaiseki</a></strong> to interact with Parse API. How can I save a user pointer to an object?</p>
  
  <p>If I query users:</p>
  
  <pre><code>kaisekiClient.getObjects('_User', function (err, res, json) {
    json[0].objectId 
    // 'pBIb9ncQDv'
  })
  </code></pre>
  
  <p>But if I try to create an object it errors.</p>
  
  <pre><code>kaisekiCient.createObject('Thing', {
    user: {
      __type: 'Pointer',
      className: '_User',
      objectId: 'pBIb9ncQDv'
    }
  }
  
  // { code: 111, 
  //   error: 'invalid type for key user, expected *User, but got *_User' }
  </code></pre>
  
  <p>Are references supposed to use <code>User</code> instead of <code>_User</code>? Why would <code>_User</code> be needed as the className for fetching objects, but not for referencing them?</p>