title: Managing POST Requests with httpuv package for building a simple API with R
body: <p>I am trying to build a simple api using httpuv package.
  The documentation says that one could use the same Rook definition. 
  While using the Rook package one can simple use:</p>
  
  <pre><code>req$POST()
  </code></pre>
  
  <p>I haven't been able to figure out how to manage simple HTTP POST requests and get their body.</p>
  
  <p>Any hints?</p>