message: example now uses websocket
diff: @@ -30,7 +30,7 @@ int main(int argc, char** argv)
  /* Create the wampcc kernel, which provides event and IO threads. */
  - std::unique_ptr<kernel> the_kernel(new kernel({}, logger::nolog()));
  + std::unique_ptr<kernel> the_kernel(new kernel({}, logger::stdout()));
  /* Create the TCP socket and attempt to connect. */
  @@ -43,10 +43,11 @@ int main(int argc, char** argv)
  if (uverr ec = fut.get())
  throw std::runtime_error("connect failed: " + std::to_string(ec.os_value()) + ", " + ec.message());
  - /* Using the connected socket, now create the wamp session object. */
  + /* Using the connected socket, now create the wamp session object, using
  + the WebSocket protocol. */
  std::promise<void> ready_to_exit;
  - std::shared_ptr<wamp_session> session = wamp_session::create<rawsocket_protocol>(
  + std::shared_ptr<wamp_session> session = wamp_session::create<websocket_protocol>(
  the_kernel.get(),
  std::move(sock),
  [&ready_to_exit](session_handle, bool is_open) {
  