counter views

counter views
测试

测试
Merge pull request #1 from zenithphp/patch-1

counter views
mysql数据连接类
添加mysql示例
美化界面，完善功能，添加错误处理。
Revert "Create README.md"

This reverts commit 363f44644207c39811db19939a52fdef78f47574.
Merge branch 'master' of https://github.com/sbmzhcn/StudySample
编码改为utf-8
Create README.md
Update README.md
Update README.md
Update README.md
Update README.md
Fixed #3: should be 项目, not 项.
Fixed