add rss support

Author: yingca1

_config.yml

@@ -88,4 +88,17 @@ search:
   path: search.xml
   field: post
   format: html
-  limit: 10000
+  limit: 10000
+
+# RSS
+## https://github.com/hexojs/hexo-generator-feed
+feed:
+  type: atom
+  path: atom.xml
+  limit: 20
+  hub:
+  content:
+  content_limit: 140
+  content_limit_delim: ' '
+  order_by: -date
+  icon: icon.png

package-lock.json

@@ -10,6 +10,7 @@
     "hexo-deployer-git": "^1.0.0",
     "hexo-generator-archive": "^0.1.5",
     "hexo-generator-category": "^0.1.3",
+    "hexo-generator-feed": "^1.2.2",
     "hexo-generator-index": "^0.2.1",
     "hexo-generator-searchdb": "^1.0.8",
     "hexo-generator-sitemap": "^1.2.0",