update README

Author: SergioChan

Preview/preview.gif

@@ -1,10 +1,18 @@
 # SCCatWaitingHUD
 
+This is a cute and simple loading HUD :-P Enjoy!
+
 [![CI Status](http://img.shields.io/travis/SergioChan/SCCatWaitingHUD.svg?style=flat)](https://travis-ci.org/SergioChan/SCCatWaitingHUD)
 [![Version](https://img.shields.io/cocoapods/v/SCCatWaitingHUD.svg?style=flat)](http://cocoapods.org/pods/SCCatWaitingHUD)
 [![License](https://img.shields.io/cocoapods/l/SCCatWaitingHUD.svg?style=flat)](http://cocoapods.org/pods/SCCatWaitingHUD)
 [![Platform](https://img.shields.io/cocoapods/p/SCCatWaitingHUD.svg?style=flat)](http://cocoapods.org/pods/SCCatWaitingHUD)
 
+## Preview
+
+![image](https://raw.githubusercontent.com/SergioChan/SCCatWaitingHUD/master/Preview/preview.png)
+
+![image](https://raw.githubusercontent.com/SergioChan/SCCatWaitingHUD/master/Preview/preview.gif)
+
 ## Usage
 
 To run the example project, clone the repo, and run `pod install` from the Example directory first.
@@ -17,13 +25,9 @@ SCCatWaitingHUD is available through [CocoaPods](http://cocoapods.org). To insta
 it, simply add the following line to your Podfile:
 
 ```ruby
-pod "SCCatWaitingHUD"
+pod 'SCCatWaitingHUD', '~> 0.1.0'
 ```
 
-## Author
-
-SergioChan, yuheng9211@qq.com
-
 ## License
 
 SCCatWaitingHUD is available under the MIT license. See the LICENSE file for more info.