webpack安裝使用問題

步驟:
1.先是npm install webpack -g
2.后來本地安裝了npm install webpack@1.15.0 --save-dev
3.然后執(zhí)行webpack -v
4.提示:The CLI moved into a separate package: webpack-cli

Would you like to install webpack-cli? (That will run npm install -D webpack-cli)  (yes/NO)yes這個,選擇yes后.

5.給我的結(jié)果是:{ Error: Cannot find module 'webpack-cli'

at Function.Module._resolveFilename (module.js:547:15)
at Function.Module._load (module.js:474:25)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at runCommand.then.result (C:\Users\leon-Yang\AppData\Roaming\npm\node_modules\webpack\bin\webpack.js:62:14)
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:188:7) code: 'MODULE_NOT_FOUND' }
我想請問下這是怎么回事?提示找不到webpack-cli包.我再node_modules文件下顯示有webpack-cli.
是我得配置問題還是?