Updated the CocoaPods installation instructions in the README.

README.md

@@ -62,7 +62,7 @@ source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 use_frameworks!
 
-pod 'Alamofire', :git => 'https://github.com/Alamofire/Alamofire.git', :branch => 'swift-2.0'
+pod 'Alamofire', '~> 2.0'
 ```
 
 Then, run the following command: