title: ActiveResource how to fetch a resource from a REST API that has a singular name?
body: <p>I am trying to grab data from a third-party library that has an API that looks like:</p>
  
  <p><code>https://foo.com/user.json?username=&lt;USERNAME&gt;</code></p>
  
  <p>I can't figure out how to force ActiveResource to use "user.json" instead of "users.json". Is it possible?</p>
  
  <p>I got it working with the reactive_resources gem ... is there a way to do it in just pure ActiveResources?</p>