Add CONTRIBUTING and LICENSE files, and add license header to source code files.

tarpc_examples/src/lib.rs

@@ -1,3 +1,11 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
 #[test]
 fn it_works() {
 }