Merge pull request #47 from daiyitastic/daiyi/update-readme

Update readme

README.md

@@ -13,6 +13,10 @@ $ npm install hexo-generator-feed --save
 - Hexo 3: 1.x
 - Hexo 2: 0.x
 
+## Use
+
+In the [front-matter](https://hexo.io/docs/front-matter.html) of your post, you can optionally add a `description` setting to write a summary for the post. Otherwise the summary will default to the excerpt or the first 140 characters of the post.
+
 ## Options
 
 You can configure this plugin in `_config.yml`.
@@ -23,9 +27,11 @@ feed:
   path: atom.xml
   limit: 20
   hub:
+  content:
 ```
 
 - **type** - Feed type. (atom/rss2)
 - **path** - Feed path. (Default: atom.xml/rss2.xml)
 - **limit** - Maximum number of posts in the feed (Use `0` or `false` to show all posts)
 - **hub** - URL of the PubSubHubbub hubs (Leave it empty if you don't use it)
+- **content** - (optional) set to 'true' to include the contents of the entire post in the feed.