title: How to catch Koala::Facebook::APIError OAuthException or user password reset
body: <p>i was wondering how i can catch a koala oauth exception (for example user password reset).</p>
  
  <p>right now this is what i have / use so far:</p>
  
  <pre><code>rescue_from Koala::Facebook::APIError do
    # redirect to fb auth dialog
  end
  </code></pre>
  
  <p>but this catches all errors.. how i can do that with just oauth or only password reset?</p>
  
  <p>EDIT:</p>
  
  <p>found out a more explicit solution to the problem:</p>
  
  <pre><code>rescue_from Koala::Facebook::APIError do |exception|
    if exception.fb_error_type == 190
      # password reset - redirect to auth dialog
    else
      raise "Facebook Error: #{exception.fb_error_type}"
    end
  end
  </code></pre>
  
  <p>thanks in advance
  oliver</p>