adding previews

Author: zhxnlai

Previews/animation.gif

@@ -3,7 +3,14 @@ A simple view for building card like interface like [Tinder](http://www.gotinder
 
 Preview
 ---
-
+### Custom Animation
+![direction](Previews/animation.gif)
+### Custom Swipe
+![direction](Previews/swipe.gif)
+### Custom Direction
+![direction](Previews/direction.gif)
+### Undo
+![direction](Previews/undo.gif)
 
 CocoaPods
 ---
@@ -38,7 +45,7 @@ swipeableView.discardViews()
 swipeableView.loadViews()
 ~~~
 
-You can limit the direction swiping happens using the `direction` property and register callbacks like this. Take a look at the [Custom Direction]() example for details.
+You can limit the direction swiping happens using the `direction` property and register callbacks like this. Take a look at the [Custom Direction](#custom-direction) example for details.
 ~~~swift
 swipeableView.direction = .Left | .Up
 swipeableView.direction = .All
@@ -69,11 +76,11 @@ swipeableView.swipeTopView(inDirection: .Down)
 
 swipeableView.swipeTopView(fromPoint: CGPoint(x: 100, y: 30), inDirection: CGVector(dx: 100, dy: -800))
 ~~~
-You can also change how the direction gets interpreted by overriding the `interpretDirection` property. Take a look at the [Custom Swipe]() example for details.
+You can also change how the direction gets interpreted by overriding the `interpretDirection` property. Take a look at the [Custom Swipe](#custom-swipe) example for details.
 
-You can create custom animation by overriding the `animateView` property. Take a look at the [Custom Animation]() example for details.
+You can create custom animation by overriding the `animateView` property. Take a look at the [Custom Animation](#custom-animation) example for details.
 
-You can undo/rewind by storing the swiped views and insert them back to the top by calling `insertTopView`. Take a look at the [Undo]() example for details.
+You can undo/rewind by storing the swiped views and insert them back to the top by calling `insertTopView`. Take a look at the [Undo](#undo) example for details.
 
 Requirements
 ---

Previews/direction.gif

@@ -9,7 +9,6 @@
 import UIKit
 
 class MenuTableViewController: UITableViewController {
-    // TODO: customize animation, direction
 
     let demos = ["Default", "Custom Animation", "Custom Swipe","Custom Direction", "Undo"]
     let viewControllers = [ZLSwipeableViewController.self,
@@ -25,7 +24,6 @@ class MenuTableViewController: UITableViewController {
     }
 
     // MARK: - Table view data source
-
     override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         return count(demos)
     }

Previews/swipe.gif

@@ -126,14 +126,6 @@ class ZLSwipeableViewController: UIViewController {
                         view1.width == cardView.bounds.width
                         view1.height == cardView.bounds.height
                     }
-                } else {
-                    var textView = UITextView(frame: cardView.bounds)
-                    textView.text = "This UITextView was created programmatically."
-                    textView.backgroundColor = UIColor.clearColor()
-                    textView.font = UIFont.systemFontOfSize(24)
-                    textView.editable = false
-                    textView.selectable = false
-                    cardView.addSubview(textView)
                 }
                 return cardView
             }