Translate README in english

README.md

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+# hexo-theme-butterfly
+
+<a href="https://github.com/jerryc127/hexo-theme-butterfly/releases"><img alt="Version" src="https://img.shields.io/badge/release-2.0.0-blue"/></a>
+<a href="https://jerryc.me"><img alt="Author" src="https://img.shields.io/badge/author-JerryC-blur"/></a>
+<a href="https://hexo.io"><img alt="Hexo" src="https://img.shields.io/badge/hexo-3.0+-0e83c"/></a>
+<a href="https://nodejs.org/"><img alt="node.js" src="https://img.shields.io/badge/node.js-6.0-blur"/></a>
+
+
+[Blog / Demo](https://jerryc.me/)
+
+Inspirecd by [hexo-theme-melody](https://github.com/Molunerfinn/hexo-theme-melody) theme.
+
+## Installation
+
+Stable branch:
+
+```
+git clone -b master https://github.com/jerryc127/hexo-theme-butterfly.git themes/Butterfly
+```
+
+Bleeding edge unstable branch:
+
+```
+git clone -b dev https://github.com/jerryc127/hexo-theme-butterfly.git themes/Butterfly
+```
+
+## Activate
+Modify hexo config `_config.yml`， and chaneg to `Butterfly` theme.
+
+```
+theme: Butterfly
+```
+
+You need to install some dependencies: pug, stylus： npm install hexo-renderer-pug hexo-renderer-stylus --save or yarn add hexo-renderer-pug hexo-renderer-stylus
+
+## More information
+
+[More information](https://jerryc.me/posts/21cfbf15)
+
+## Screenshots
+
+![image](https://user-images.githubusercontent.com/16351105/58887365-1272f780-8718-11e9-9329-3292c6ba20d4.png)
+![image](https://user-images.githubusercontent.com/16351105/58887457-3cc4b500-8718-11e9-9417-2bdea603c92e.png)