Boost beast

This commit is the beginings of attempting to transition away from
crow, and toward boost::beast.  Unit tests are passing, and
implementation appears to be slightly faster than crow.

Change-Id: Ic8d946dc7a04f514c67b1098f181eee1ced69171
diff --git a/src/token_authorization_middleware_test.cpp b/src/token_authorization_middleware_test.cpp
index 5857d2e..8f45834 100644
--- a/src/token_authorization_middleware_test.cpp
+++ b/src/token_authorization_middleware_test.cpp
@@ -11,7 +11,7 @@
   App<crow::PersistentData::Middleware, crow::TokenAuthorization::Middleware>
       app;
   decltype(app)::server_t server(&app, "127.0.0.1", 45451);
-  CROW_ROUTE(app, "/")([]() { return 200; });
+  CROW_ROUTE(app, "/")([]() { return boost::beast::http::status::ok; });
   auto _ = async(launch::async, [&] { server.run(); });
   asio::io_service is;
   std::string sendmsg;
@@ -50,7 +50,7 @@
   App<crow::PersistentData::Middleware, crow::TokenAuthorization::Middleware>
       app;
   app.bindaddr("127.0.0.1").port(45451);
-  CROW_ROUTE(app, "/")([]() { return 200; });
+  CROW_ROUTE(app, "/")([]() { return boost::beast::http::status::ok; });
   auto _ = async(launch::async, [&] { app.run(); });
 
   asio::io_service is;
@@ -80,7 +80,7 @@
   App<crow::PersistentData::Middleware, crow::TokenAuthorization::Middleware>
       app;
   app.bindaddr("127.0.0.1").port(45451);
-  CROW_ROUTE(app, "/")([]() { return 200; });
+  CROW_ROUTE(app, "/")([]() { return boost::beast::http::status::ok; });
   auto _ = async(launch::async, [&] { app.run(); });
 
   asio::io_service is;
@@ -110,7 +110,7 @@
   App<crow::PersistentData::Middleware, crow::TokenAuthorization::Middleware>
       app;
   app.bindaddr("127.0.0.1").port(45451);
-  CROW_ROUTE(app, "/")([]() { return 200; });
+  CROW_ROUTE(app, "/")([]() { return boost::beast::http::status::ok; });
   auto _ = async(launch::async, [&] { app.run(); });
 
   asio::io_service is;
@@ -194,7 +194,7 @@
   App<crow::PersistentData::Middleware, crow::TokenAuthorization::Middleware>
       app;
   app.bindaddr("127.0.0.1").port(45451);
-  CROW_ROUTE(app, "/")([]() { return 200; });
+  CROW_ROUTE(app, "/")([]() { return boost::beast::http::status::ok; });
   auto _ = async(launch::async, [&] { app.run(); });
 
   asio::io_service is;