title: Defining "path" to object key with a string
body: <p>Is it possible to define a "path" to an <code>object</code> key?</p>
  
  <p>For instance if you have an <code>object</code>:</p>
  
  <pre><code>var obj = {
      hello: {
          you: "you"
      }
  }
  </code></pre>
  
  <p>I would like to select it like this:</p>
  
  <pre><code>var path = "hello.you";
  obj[path]; //Should return "you"
  </code></pre>
  
  <p>(Doesn't work obviously, but is there a way?)</p>