title: Can I make a React component re-render itself when it's attribute is a reactive data source from Meteor?
body: <p>e.g. I have a user profile name component:</p>
  
  <pre><code>Name = React.createClass({
    render() {
      let name = this.props.user ? this.props.user.profile.name : '';
      return &lt;span&gt;{name}&lt;/span&gt;;
    }
  })
  </code></pre>
  
  <p>How can I get the following name tag update itself automatically when user signs in/signs out:</p>
  
  <pre><code>&lt;Name user={Meteor.user()} /&gt;
  </code></pre>