update readme

Author: jregnauld

README.md

@@ -14,7 +14,8 @@ source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 use_frameworks!
 
-pod 'Alamofire', :git => 'https://github.com/SwiftyJSON/Alamofire-SwiftyJSON.git', :branch => 'swift-2.0'
+pod 'Alamofire-SwiftyJSON'
+
 ```
 
 ## Usage