增加rest模块servlet启动类

guns-rest/src/main/java/com/stylefeng/guns/rest/GunsRestServletInitializer.java

+package com.stylefeng.guns.rest;
+
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.web.support.SpringBootServletInitializer;
+
+/**
+ * Guns REST Web程序启动类
+ *
+ * @author fengshuonan
+ * @date 2017年9月29日09:00:42
+ */
+public class GunsRestServletInitializer extends SpringBootServletInitializer {
+
+    @Override
+    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
+        return builder.sources(GunsRestApplication.class);
+    }
+
+}