attribute class is reserved word in IE8  and  cause failure, so round by double quotation
Merge https://github.com/precena-dev/data-confirm-modal into precena-dev-ie8-fix

* https://github.com/precena-dev/data-confirm-modal:
  attribute class is reserved word in IE8  and  cause failure, so round by double quotation
Remove .DS_Store
Merge @precena-dev's IE8 fix. Thanks! :smile: cc: @lleirborras

* precena-dev-ie8-fix:
  Remove .DS_Store
  attribute class is reserved word in IE8  and  cause failure, so round by double quotation