upgrade antd-tools and use next over beta, ant-design/antd-tools#57

docs/react/introduce.en-US.md

@@ -41,7 +41,7 @@ Following the Ant Design specification, we developed a React UI library `antd` t
 ## Version
 
 - Stable: [![npm package](https://img.shields.io/npm/v/antd.svg?style=flat-square)](https://www.npmjs.org/package/antd)
-- Beta: [![](https://cnpmjs.org/badge/v/antd.svg?&tag=beta&subject=npm)](https://www.npmjs.org/package/antd)
+- Next: [![](https://cnpmjs.org/badge/v/antd.svg?&tag=next&subject=npm)](https://www.npmjs.org/package/antd)
 
 You can subscribe to this feed for new version notifications: https://github.com/ant-design/ant-design/releases.atom
 

docs/react/introduce.zh-CN.md

@@ -41,7 +41,7 @@ title: Ant Design of React
 ## 版本
 
 - 稳定版：[![npm package](https://img.shields.io/npm/v/antd.svg?style=flat-square)](https://www.npmjs.org/package/antd)
-- 开发版：[![](https://cnpmjs.org/badge/v/antd.svg?&tag=beta&subject=npm)](https://www.npmjs.org/package/antd)
+- 预览版：[![](https://cnpmjs.org/badge/v/antd.svg?&tag=next&subject=npm)](https://www.npmjs.org/package/antd)
 
 你可以订阅：https://github.com/ant-design/ant-design/releases.atom 来获得稳定版发布的通知。
 

package.json

@@ -80,7 +80,7 @@
   "devDependencies": {
     "@types/react": "^15.0.38",
     "@types/react-dom": "~0.14.18",
-    "antd-tools": "~1.7.0",
+    "antd-tools": "~1.8.0",
     "babel-cli": "^6.18.0",
     "babel-eslint": "^7.1.0",
     "babel-plugin-import": "^1.0.0",