Merge pull request swiftlang#149 from google/generate-pipeline-license

Update license header in the pipeline generator.

Author: dabelknap

Sources/generate-pipeline/main.swift

@@ -124,15 +124,13 @@ handle.write(
   """
   //===----------------------------------------------------------------------===//
   //
-  // This source file is part of the Swift Formatter open source project.
+  // This source file is part of the Swift.org open source project
   //
-  // Copyright (c) 2018 Apple Inc. and the Swift Formatter project authors
-  // Licensed under Apache License v2.0
+  // Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
+  // Licensed under Apache License v2.0 with Runtime Library Exception
   //
-  // See LICENSE.txt for license information
-  // See CONTRIBUTORS.txt for the list of Swift Formatter project authors
-  //
-  // SPDX-License-Identifier: Apache-2.0
+  // See https://swift.org/LICENSE.txt for license information
+  // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
   //
   //===----------------------------------------------------------------------===//