message: Add Access-Control-Allow-Origin to http
diff: @@ -140,6 +140,7 @@ namespace eos {
  handler_itr->second(resource, body, [con,this](int code, string body) {
  con->set_body(body);
  con->set_status(websocketpp::http::status_code::value(code));
  + con->append_header("Access-Control-Allow-Origin", "*");
  });
  } else {
  wlog("404 - not found: ${ep}", ("ep",resource));
  