Release 2019-06-12 toolchain for macOS.

swiftlang/swift@c224468

Installation.md

@@ -38,7 +38,7 @@ To install Swift for TensorFlow, download one of the packages below and follow t
 
 | Download | Date | 
 |----------|------|
-| [Xcode 10](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-06-06-a-osx.pkg) | June 6, 2019 |
+| [Xcode 10](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-06-12-a-osx.pkg) | June 12, 2019 |
 | [Ubuntu 18.04 (CPU Only)](https://storage.googleapis.com/s4tf-kokoro-artifact-testing/latest/swift-tensorflow-DEVELOPMENT-ubuntu18.04.tar.gz) | Nightly | 
 | [Ubuntu 18.04 (CUDA 10.0)](https://storage.googleapis.com/s4tf-kokoro-artifact-testing/latest/swift-tensorflow-DEVELOPMENT-cuda10.0-cudnn7-ubuntu18.04.tar.gz) | Nightly | 
 | [Ubuntu 18.04 (CUDA 9.2)](https://storage.googleapis.com/s4tf-kokoro-artifact-testing/latest/swift-tensorflow-DEVELOPMENT-cuda9.2-cudnn7-ubuntu18.04.tar.gz) | Nightly |
@@ -52,6 +52,7 @@ To install Swift for TensorFlow, download one of the packages below and follow t
 
 | Download |
 |----------|
+| [June 6, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-06-06-a-osx.pkg) |
 | [June 4, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-06-04-a-osx.pkg) |
 | [April 16, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-04-16-a-osx.pkg) |
 | [March 26, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-03-26-a-osx.pkg) |