Update README.md

Author: w2xi

README.md

@@ -9,7 +9,6 @@
     - [x] ref
     - [x] computed
     - [x] watch
-    - [ ] 自动脱 ref
 - 编译器
     - [x] 模板解析器 parse
     - [x] 转化器 transform
@@ -23,4 +22,4 @@
 - 《Vue.js 设计与实现》by 霍春阳
 - https://github.com/vuejs/core
 - https://github.com/cuixiaorui/mini-vue
-- https://github.com/tim101010101/beggar-vue
+- https://github.com/tim101010101/beggar-vue