Add 'src/beast/' from commit '2f9a8440c2432d8a196571d6300404cb76314125'

git-subtree-dir: src/beast
git-subtree-mainline: 7c90b9ef88
git-subtree-split: 2f9a8440c2

src/beast/test/websocket.cpp

@@ -0,0 +1,9 @@
+//
+// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+// Test that header file is self-contained.
+#include <beast/websocket.hpp>