fix a submit bug
radio and checkbox should be validated as group
radio and checkbox should respond to `change` and `blue` event
Merge pull request #22 from ChrisYip/feature/radio-and-checkbox-validation

Feature/radio and checkbox validation
Merge branch 'master' of github.com:sofish/validator.js
fix #23
fix #24: 符乱入
add example
在 readme.md 增加示例
Create gh-pages branch via GitHub
remove demo
add .gitignore
把 demo 移出目录
add demo
修改样式