Merge pull request #19 from RubyLouvre/master

merge from RubyLouvre
Merge pull request #20 from RubyLouvre/master

merge from RubyLouvre
daterangepicker 按钮添加 type="button" 属性
Merge pull request #444 from dragonwong/master

daterangepicker 按钮添加 type="button" 属性