Merge pull request #3427 from rintaro/readme-buildstatus-package

[README] Add package build status in README

Author: shahmishal

README.md

@@ -1,11 +1,11 @@
 <img src="https://swift.org/assets/images/swift.svg" alt="Swift logo" height="70" >
 # Swift Programming Language
 
-|| **Status** |
-|---|---|
-|**macOS**         |[![Build Status](https://ci.swift.org/job/oss-swift-incremental-RA-osx/badge/icon)](https://ci.swift.org/job/oss-swift-incremental-RA-osx)|
-|**Ubuntu 14.04** |[![Build Status](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-14_04/badge/icon)](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-14_04)|
-|**Ubuntu 15.10** |[![Build Status](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-15_10/badge/icon)](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-15_10)|
+|| **Swift** | **Package** |
+|---|---|---|
+|**macOS**         |[![Build Status](https://ci.swift.org/job/oss-swift-incremental-RA-osx/badge/icon)](https://ci.swift.org/job/oss-swift-incremental-RA-osx)|[![Build Status](https://ci.swift.org/job/oss-swift-package-osx/badge/icon)](https://ci.swift.org/job/oss-swift-package-osx)|
+|**Ubuntu 14.04** |[![Build Status](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-14_04/badge/icon)](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-14_04)|[![Build Status](https://ci.swift.org/job/oss-swift-package-linux-ubuntu-14_04/badge/icon)](https://ci.swift.org/job/oss-swift-package-linux-ubuntu-14_04)|
+|**Ubuntu 15.10** |[![Build Status](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-15_10/badge/icon)](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-15_10)|[![Build Status](https://ci.swift.org/job/oss-swift-package-linux-ubuntu-15_10/badge/icon)](https://ci.swift.org/job/oss-swift-package-linux-ubuntu-15_10)|
 
 **Welcome to Swift!**