修改店铺样式，优化部分代码

pages/product/shopPage.vue

@@ -147,6 +147,8 @@ export default {
     this.getGoodsData();
     // 优惠券信息
     this.getCouponsData();
+    // 店铺分类
+    this.getCategoryData();
   },
   // 下拉加载
   onReachBottom() {

pages/product/shopPageGoods.vue

@@ -51,6 +51,10 @@ export default {
     this.params.pageNumber = 1;
     this.getGoodsData();
   },
+  onReachBottom(){
+    this.params.pageNumber ++;
+    this.getGoodsData();
+  },
   methods: {
     /**
      * 跳转到商品详情