Cannotresolvemodule'vum'

"dependencies": {

    "babel-runtime": "^6.0.0",

    "vue": "^1.0.21",

    "vum": "0.0.2"

  },

import Vue from 'vue'

import Router from 'vue-router'

import FastClick from 'fastclick'  

import Vum from 'vum'//应该是这里报错



import Index from './components/Index'



Vue.use(Router)

Vue.use(Vum)



let App = Vue.extend()



let router = new Router()



router.map({

  '/': {

    name: 'index',

    component: Index

  }

})



router.start(App, '#app')



Vum.router(router)  



FastClick.attach(document.body)