FabricでTwitterのタイムラインを表示する(サンプル版） ref: http://qiita.com/g-1/items/43ecf43dd997af9f99bb

LoginViewController.swift

import UIKit
import TwitterKit


class LoginViewController: UIViewController {

  override func viewDidLoad() {
    super.viewDidLoad()

    let logInButton = TWTRLogInButton { (session, error) in
      if session != nil {
        self.performSegueWithIdentifier("main", sender: session!.userName)
      } else {
        NSLog("Login error: %@", error!.localizedDescription);
      }
    }

    // TODO: Change where the log in button is positioned in your view
    logInButton.center = self.view.center
    self.view.addSubview(logInButton)
  }

  override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    let session = sender as? TWTRSession
    let dest = segue.destinationViewController as! MainViewController
    dest.title = session!.userName
    dest.userId = session?.userID

  }
}

MainViewController.swift

import UIKit
import TwitterKit

class MainViewController: TWTRTimelineViewController {
  var userId: String?

  override func viewDidLoad() {
    super.viewDidLoad()

    let client = TWTRAPIClient(userID: self.userId)
    self.dataSource = TWTRUserTimelineDataSource(screenName: "fabric", APIClient: client)
  }
}