Adding instructions for Swift 1.2 / Xcode 6.3

README.md

@@ -35,6 +35,8 @@ Alamofire is an HTTP networking library written in Swift, from the [creator](htt
 > **Embedded frameworks require a minimum deployment target of iOS 8 or OS X Mavericks.**
 >
 > To use Alamofire with a project targeting iOS 7, you must include the `Alamofire.swift` source file directly in your project. See the ['Source File'](#source-file) section for instructions.
+>
+> For Swift 1.2 using the Xcode 6.3 Beta, use the [xcode-6.3 branch](https://github.com/Alamofire/Alamofire/tree/xcode-6.3).
 
 ### CocoaPods