title: Advanced REST Client: adding query parameters
body: <p>Advanced REST Client seems like a neat REST client implementation to try REST-APIs. 
  But, I can't find how I can add query parameters to the URI of the API, but without putting it up the with the URI itself.</p>
  
  <p>for example, to generate some URL like
  <code>https://api.example.com/v2/users/?age=25&amp;fanOf=lakers</code></p>
  
  <p>i want to add parameters like <code>"age"=25</code> and <code>"fanOf"="lakers"</code>.</p>
  
  <p>i know it's there somewhere but can't find it plainly on, otherwise intuitive interface, `Advanced REST client".</p>