Merge branch 'feature/pcchannel' into develop

@@ -2,6 +2,11 @@
 
 
 const _ = require('lodash');
 const _ = require('lodash');
 
 
+/**
+ * 设置seo相关的数据，包括title, keywords, description
+ * @param  {Object} seoData 包含seo属性的对象
+ * @return {Function} 中间件函数，用于给res.locals对象添加属性
+ */
 module.exports = seoData => {
 module.exports = seoData => {
     const defaultSeoData = {
     const defaultSeoData = {
     /* eslint-disable */
     /* eslint-disable */