Add vector_body

fix #580

test/http/vector_body.cpp

@@ -0,0 +1,19 @@
+//
+// Copyright (c) 2013-2017 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/http/vector_body.hpp>
+
+namespace beast {
+namespace http {
+
+BOOST_STATIC_ASSERT(is_body<vector_body<char>>::value);
+BOOST_STATIC_ASSERT(is_body_reader<vector_body<char>>::value);
+BOOST_STATIC_ASSERT(is_body_writer<vector_body<char>>::value);
+
+} // http
+} // beast