Update README.md

Author: liangliangyy

README.md

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 基于`python3.6`和`Django2.1`的博客。   
 
-[![Build Status](https://travis-ci.org/liangliangyy/DjangoBlog.svg?branch=master)](https://travis-ci.org/liangliangyy/DjangoBlog) [![codecov](https://codecov.io/gh/liangliangyy/DjangoBlog/branch/master/graph/badge.svg)](https://codecov.io/gh/liangliangyy/DjangoBlog) [![Requirements Status](https://requires.io/github/liangliangyy/DjangoBlog/requirements.svg?branch=master)](https://requires.io/github/liangliangyy/DjangoBlog/requirements/?branch=master)  [![license](https://img.shields.io/github/license/liangliangyy/djangoblog.svg)]() [![GitHub release](https://img.shields.io/github/release/liangliangyy/djangoblog.svg)]() [![python3.5](https://img.shields.io/badge/python-3.5-brightgreen.svg)]() [![django1.10](https://img.shields.io/badge/django-2.0-brightgreen.svg)]()     
+[![Build Status](https://travis-ci.org/liangliangyy/DjangoBlog.svg?branch=master)](https://travis-ci.org/liangliangyy/DjangoBlog) [![codecov](https://codecov.io/gh/liangliangyy/DjangoBlog/branch/master/graph/badge.svg)](https://codecov.io/gh/liangliangyy/DjangoBlog) [![Requirements Status](https://requires.io/github/liangliangyy/DjangoBlog/requirements.svg?branch=master)](https://requires.io/github/liangliangyy/DjangoBlog/requirements/?branch=master)  [![license](https://img.shields.io/github/license/liangliangyy/djangoblog.svg)]()  
 
 ## 主要功能：
 - 文章，页面，分类目录，标签的添加，删除，编辑等。文章及页面支持`Markdown`，支持代码高亮。