add changelog

Author: tangjinzhou

CHANGELOG.en-US.md

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+# Change Log
+
+---
+## 0.4.0
+
+#### Layout
+
+- add  `layout` component
+
+#### Others
+
+- support use [Vue.use(antd)](https://github.com/vueComponent/ant-design/issues/3)
+
+
+## 0.3.1
+
+#### Features
+
+- first version, provide 45 [components](https://github.com/vueComponent/ant-design/blob/c7e83d6142f0c5e72ef8fe794620478e69a50a8e/site/components.js)

CHANGELOG.zh-CN.md

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+# 更新日志
+
+---
+## 0.4.0
+
+#### Layout
+
+- 新增 Layout 组件
+
+#### 其它
+
+- 支持导入所有组件[Vue.use(antd)](https://github.com/vueComponent/ant-design/issues/3)
+
+
+## 0.3.1
+
+#### Features
+
+- 对外第一个版本，提供常用45个[组件](https://github.com/vueComponent/ant-design/blob/c7e83d6142f0c5e72ef8fe794620478e69a50a8e/site/components.js)
+