title: Geokit Rails - find all users who contain a point(location) in their range
body: <p>Trying to understand how can I use Geokit Rails to get all users who covers a certain point with their coverage range.</p>
  
  <p>For example users A, B, C and D has a radius of i > 0 km. Now let's say I want to find all users who cover a selected point on map created with lat and lng. So <strong>it's not the issue when I want to find all records within a range</strong>, it's the case where I want to <strong>find all records who include my location in their range</strong>.</p>
  
  <p>From image: should return User A, B, C and not D as the red dot is not in his range.</p>
  
  <p>What I have tried: I've looked in the docs from top to bottom, searched for examples but all leads to finding records in a range, so it's not my case. If any one had the same thing to solve please share. Thank you.</p>
  
  <p><img src="https://i.stack.imgur.com/f4YkX.png" alt="graphic description of the problem"></p>