title: Ruby Twitter how to authorize user?
body: <p>I have an app which must to tweet in user's page.</p>
  
  <p>Using gem <a href="https://github.com/sferik/twitter" rel="nofollow">Twitter</a></p>
  
  <p>I have an action which must create all stuff.</p>
  
  <pre><code>def call
    client = set_client
  
    client.token
  
    client.update!("I'm tweeting with @gem!")
  end
  </code></pre>
  
  <p>This method create client for using API   </p>
  
  <pre><code>def set_client
    Twitter::REST::Client.new do |config|
      config.consumer_key        = "****"
      config.consumer_secret     = "****"
      config.access_token        = "****"
      config.access_token_secret = "****"
    end
  end
  </code></pre>
  
  <p>If I think correct I need to get user's access_token and authorize him with permissions.
  But in app's setting I can get token for my page only.</p>
  
  <p>How I can realize the feature, when I'm getting user's access_token and access_token_secret?</p>