fix

Author: jungin7612

_config.yml

@@ -50,6 +50,9 @@ exclude:
   - _drafts
 
 collections:
+  posts:
+    output: true
+    permalink: /:collection/:path/
   pages:
     output: true
     permalink: /:collection/:path/

_posts/00.Introduction.md

@@ -1,7 +1,6 @@
 ---
 title: 00. Introduction
 author: Tao He
-date: 2019-04-27
 category: Jekyll
 layout: post
 ---