update docs

.gitattributes

@@ -70,6 +70,8 @@
 *.pdf binary
 *.doc binary
 *.docx binary
+*.ppt binary
+*.pptx binary
 *.xls binary
 *.xlsx binary
 *.xmind binary

docs/coverpage.md

@@ -1,4 +1,5 @@
 <div align="center"><img width="100px" src="http://dunwu.test.upcdn.net/common/logo/zp.png"/></div>
+
 # nginx-tutorial
 
 > Nginx 极简教程

examples/javaapp/src/main/java/io/github/dunwu/web/controller/ApiController.java

@@ -22,7 +22,7 @@ import java.util.TreeSet;
  * 配合前端请求的 API 接口
  *
  * @author zhangpeng0913
- * @date 2017/8/23.
+ * @since 2017/8/23.
  */
 @Controller
 public class ApiController {

examples/javaapp/src/main/java/io/github/dunwu/web/controller/IndexController.java

@@ -10,7 +10,7 @@ import org.springframework.web.servlet.ModelAndView;
 
 /**
  * @author Zhang Peng
- * @date 2017/4/12.
+ * @since 2017/4/12.
  */
 @Controller
 public class IndexController {