版本：2.0.0-rc.8
- https://cdn.bootcdn.net/ajax/libs/vue/2.0.0-rc.8/vue.common.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.0.0-rc.8/vue.common.min.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.0.0-rc.8/vue.js
- https://cdn.bootcdn.net/ajax/libs/vue/2.0.0-rc.8/vue.min.js