diff --git a/README.md b/README.md
index 8753642..a9e6a90 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,38 @@ You can then parse `r->data()` to JSON object with your favorite JSON library. M
 
 ## Server API Examples
 
+### Hello, World!
+
+```cpp
+class HelloView : public webcc::View {
+public:
+  webcc::ResponsePtr Handle(webcc::RequestPtr request) override {
+    if (request->method() == "GET") {
+      return webcc::ResponseBuilder{}.OK().Body("Hello, World!")();
+    }
+
+    return {};
+  }
+};
+
+int main() {
+  try {
+    webcc::Server server(8080);
+
+    server.Route("/", std::make_shared<HelloView>());
+
+    server.Run();
+
+  } catch (const std::exception&) {
+    return 1;
+  }
+
+  return 0;
+}
+```
+
+### Book Store
+
 Suppose you want to create a book server and provide the following operations with RESTful API:
 
 - Query books based on some criterias.
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index b482753..58c2ee6 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -39,6 +39,9 @@ if(WEBCC_ENABLE_SSL)
     target_link_libraries(github_client ${EXAMPLE_LIBS} jsoncpp)
 endif()
 
+add_executable(hello_world_server hello_world_server.cc)
+target_link_libraries(hello_world_server ${EXAMPLE_LIBS})
+
 add_executable(rest_book_server rest_book_server.cc ${REST_BOOK_SRCS})
 target_link_libraries(rest_book_server ${EXAMPLE_LIBS} jsoncpp)
 
diff --git a/examples/hello_world_server.cc b/examples/hello_world_server.cc
new file mode 100644
index 0000000..f08f022
--- /dev/null
+++ b/examples/hello_world_server.cc
@@ -0,0 +1,28 @@
+#include "webcc/response_builder.h"
+#include "webcc/server.h"
+
+class HelloView : public webcc::View {
+public:
+  webcc::ResponsePtr Handle(webcc::RequestPtr request) override {
+    if (request->method() == "GET") {
+      return webcc::ResponseBuilder{}.OK().Body("Hello, World!")();
+    }
+
+    return {};
+  }
+};
+
+int main() {
+  try {
+    webcc::Server server(8080);
+
+    server.Route("/", std::make_shared<HelloView>());
+
+    server.Run();
+
+  } catch (const std::exception&) {
+    return 1;
+  }
+
+  return 0;
+}
diff --git a/examples/rest_book_client.cc b/examples/rest_book_client.cc
index a54ca4b..e4cf4c5 100644
--- a/examples/rest_book_client.cc
+++ b/examples/rest_book_client.cc
@@ -214,6 +214,7 @@ int main(int argc, char* argv[]) {
   session.set_timeout(timeout);
 
   // If the request has body, default to this content type.
+  // Optional.
   session.set_media_type("application/json");
   session.set_charset("utf-8");
 
diff --git a/webcc/server.h b/webcc/server.h
index cd09c9d..6765d62 100644
--- a/webcc/server.h
+++ b/webcc/server.h
@@ -17,7 +17,8 @@ namespace webcc {
 
 class Server {
 public:
-  Server(std::uint16_t port, std::size_t workers, const Path& doc_root = {});
+  explicit Server(std::uint16_t port, std::size_t workers = 1,
+                  const Path& doc_root = {});
 
   virtual ~Server() = default;
 
@@ -26,25 +27,19 @@ public:
 
   // Route a URL to a view.
   // The URL should start with "/". E.g., "/instances".
-  bool Route(const std::string& url, ViewPtr view, const Strings& methods) {
+  bool Route(const std::string& url, ViewPtr view,
+             const Strings& methods = { "GET" }) {
     return request_handler_.Route(url, view, methods);
   }
 
-  bool Route(const std::string& url, ViewPtr view) {
-    return Route(url, view, { methods::kGet });
-  }
-
   // Route a regular expression URL to a view.
   // The URL should start with "/" and be a regular expression.
   // E.g., "/instances/(\\d+)".
-  bool Route(const RegexUrl& regex_url, ViewPtr view, const Strings& methods) {
+  bool Route(const RegexUrl& regex_url, ViewPtr view,
+             const Strings& methods = { "GET" }) {
     return request_handler_.Route(regex_url, view, methods);
   }
 
-  bool Route(const RegexUrl& regex_url, ViewPtr view) {
-    return request_handler_.Route(regex_url, view, { methods::kGet });
-  }
-
   // Run the loop.
   void Run();
 
diff --git a/webcc/view.cc b/webcc/view.cc
deleted file mode 100644
index c2a740b..0000000
--- a/webcc/view.cc
+++ /dev/null
@@ -1,43 +0,0 @@
-#include "webcc/view.h"
-
-namespace webcc {
-
-// -----------------------------------------------------------------------------
-//
-//ResponsePtr DetailView::Handle(RequestPtr request, const UrlArgs& args) {
-//  if (request->method() == methods::kGet) {
-//    return Get(args, UrlQuery(request->url().query()));
-//  }
-//  
-//  if (request->method() == methods::kPut) {
-//    return Put(request, args);
-//  }
-//  
-//  if (request->method() == methods::kPatch) {
-//    return Patch(request, args);
-//  }
-//
-//  if (request->method() == methods::kDelete) {
-//    return Delete(args);
-//  }
-//
-//  return ResponsePtr();
-//}
-//
-//ResponsePtr DetailView::Get(const UrlArgs& args, const UrlQuery& query) {
-//  return ResponsePtr();
-//}
-//
-//ResponsePtr DetailView::Put(RequestPtr request, const UrlArgs& args) {
-//  return ResponsePtr();
-//}
-//
-//ResponsePtr DetailView::Patch(RequestPtr request, const UrlArgs& args) {
-//  return ResponsePtr();
-//}
-//
-//ResponsePtr DetailView::Delete(const UrlArgs& args) {
-//  return ResponsePtr();
-//}
-
-}  // namespace webcc