增加快递信息常量类

+package com.yohoufo.common.constant;
+
+/**
+ * 物流信息常量
+ *
+ * @author kun.wang
+ * @date 2018/9/25
+ */
+public class ExpressInfoConstant {
+
+    /**
+     * 卖家到鉴定中心
+     */
+    public static final Integer EXPRESS_TYPE_1 = 1;
+
+    /**
+     * 鉴定中心到买家
+     */
+    public static final Integer EXPRESS_TYPE_2 = 2;
+
+    /**
+     * 鉴定中心退回到卖家
+     */
+    public static final Integer EXPRESS_TYPE_3 = 3;
+
+    /**
+     * 未签收
+     */
+    public static final Integer EXPRESS_STATUS_UNSING = 0;
+
+    /**
+     * 签收
+     */
+    public static final Integer EXPRESS_STATUS_SIGN = 1;
+
+    /**
+     * 未发货
+     */
+    public static final Integer EXPRESS_STATUS_UNSEND = 2;
+}