docs: add status

ulivz · ulivz · commit 6fbaa78876a1 · 2019-06-24T23:14:00.000+08:00
diff --git a/README.md b/README.md
@@ -2,6 +2,10 @@
 
 > Official blog plugin for VuePress. 
 
+## Status: WIP
+
+Most of the planned features in place but there may still be bugs. API may still change until we remove this status tip. Do not use in production yet unless you are adventurous.
+
 ## Features
 
 - [**Classification**](https://vuepress-plugin-blog.ulivz.com/guide/getting-started.html#document-classifier): 
