add java doc

weixin4j-wxa/src/main/java/com/foxinmy/weixin4j/wxa/model/phone/PhoneInfo.java

@@ -2,6 +2,9 @@ package com.foxinmy.weixin4j.wxa.model.phone;
 
 import java.io.Serializable;
 
+/**
+ * 微信绑定号码解析结果
+ */
 public class PhoneInfo implements Serializable {
 
 	private String phoneNumber;

weixin4j-wxa/src/main/java/com/foxinmy/weixin4j/wxa/model/phone/Watermark.java

@@ -2,6 +2,9 @@ package com.foxinmy.weixin4j.wxa.model.phone;
 
 import java.io.Serializable;
 
+/**
+ * 数据水印
+ */
 public class Watermark implements Serializable {
 
 	private String appId;