src/components/MdField/MdSelect/index.js
import material from 'vue-material/material'
import MdSelect from './MdSelect'
import MdOption from './MdOption'
import MdOptgroup from './MdOptgroup'
export default Vue => {
material(Vue)
Vue.component(MdSelect.name, MdSelect)
Vue.component(MdOption.name, MdOption)
Vue.component(MdOptgroup.name, MdOptgroup)
}