title: Firebase, variable as key name
body: <p>what I basically want to do is this:</p>
  
  <pre><code>variable = 'whatever';
  fb.set({ variable : "More Stuff" });
  </code></pre>
  
  <p>So this will result in an entry that looks like:</p>
  
  <pre><code>whatever: "More Stuff"
  </code></pre>
  
  <p>Currently it just ends up as</p>
  
  <pre><code>variable: "More Stuff"
  </code></pre>
  
  <p>Can this be done?</p>