title: Mongo, find through list of ids
body: <p>I have a process that returns a list of String MongoDB ids,</p>
  
  <pre><code>[512d5793abb900bf3e20d012, 512d5793abb900bf3e20d011]
  </code></pre>
  
  <p>And I want to fire a single query to Mongo and get the matching documents back in the same order as the list.</p>
  
  <p>What is the shell notation to do this?</p>