Updated README.md with badges

README.md

@@ -1,5 +1,9 @@
 Web Image
 =========
+[![Build Status](http://img.shields.io/travis/rs/SDWebImage/master.svg?style=flat)](https://travis-ci.org/rs/SDWebImage)
+[![Pod Version](http://img.shields.io/cocoapods/v/SDWebImage.svg?style=flat)](http://cocoadocs.org/docsets/SDWebImage/)
+[![Pod Platform](http://img.shields.io/cocoapods/p/SDWebImage.svg?style=flat)](http://cocoadocs.org/docsets/SDWebImage/)
+[![Pod License](http://img.shields.io/cocoapods/l/SDWebImage.svg?style=flat)](https://www.apache.org/licenses/LICENSE-2.0.html)
 
 This library provides a category for UIImageView with support for remote images coming from the web.