title: Electron Nedb findOne returns null?
body: <p>I am calling a simple query with findOne, so far the data in users.db is:</p>
  
  <pre><code>{"id":40, "is_admin":1,"name":"John Smith"},
  {"id":43, "is_admin":1,"name":"Laura Smith"}
  
  
  // Users
    var users = new Datastore({ filename: 'db/users.db' });
    var id_user = 43;
  
  
    console.log("-------------geting users db");
    //
    users.loadDatabase(function (err) {
  
      console.log("------------- users db loaded--", id_user);
  
      // find user by id
      users.findOne({ id: id_user }, function (err, a,b,c) {
        console.log(a,b,c); // displays null undefined undefined
      });
  
  
    });
  </code></pre>
  
  <p>Any idea why is returning null?</p>