Split SecurityAutoConfiguration

Spring Security 3.2 has a new annotation @EnableWebMvcSecurity that we
should use if MVC is being used.

spring-boot-samples/spring-boot-sample-servlet/src/main/java/org/springframework/boot/sample/servlet/SampleServletApplication.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.sample.servlet;
+
+import java.io.IOException;
+
+import javax.servlet.GenericServlet;
+import javax.servlet.Servlet;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableAutoConfiguration
+public class SampleServletApplication {
+	
+	@SuppressWarnings("serial")
+	@Bean
+	public Servlet dispatcherServlet() {
+		return new GenericServlet() {
+			@Override
+			public void service(ServletRequest req, ServletResponse res) throws ServletException,
+					IOException {
+				res.setContentType("text/plain");
+				res.getWriter().append("Hello World");
+			}
+		};
+	}
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(SampleServletApplication.class, args);
+	}
+
+}