更新 'README.md'

README.md

+> Author: Qingwang Chen
+>
+> Email: qwch20@fudan.edu.cn
+>
+> Last Updates: 16/10/2020
+
+#### Requirements
+
+- choppy
+- Ali-Cloud
+
+```
+# 激活choppy环境
+$ source activate choppy (open-choppy-env)
+
+# 第一次安装
+$choppy install chenqingwang/bam-readcount
+# 非第一次安装
+$choppy install chenqingwang/bam-readcount -f 
+
+# 查询已安装APP
+$ choppy apps
+```
+
+#### Quick Start