node.js - yoman安装有问题

Question

安装yoman时命令行这样提示：

    C:\Users\张洋\WebstormProjects\react_gallary\react_gallary [master +12 ~1 -0 !]> npm install -g yo
    npm WARN deprecated npmconf@2.1.2: **this package has been reintegrated into npm and is now out of date with respect to npm**
    \
    > spawn-sync@1.0.15 postinstall C:\Users\张洋\AppData\Roaming\npm\node_modules\yo\node_modules\yeoman-environment\node_modules\inquirer\node_modules\external-editor\node_modules\spawn-sync
    > node postinstall
    
    
    > spawn-sync@1.0.15 postinstall C:\Users\张洋\AppData\Roaming\npm\node_modules\yo\node_modules\tabtab\node_modules\inquirer\node_modules\external-editor\node_modules\spawn-sync
    > node postinstall
    
    C:\Users\张洋\AppData\Roaming\npm\yo-complete -> C:\Users\张洋\AppData\Roaming\npm\node_modules\yo\lib\completion\index.js
    C:\Users\张洋\AppData\Roaming\npm\yo -> C:\Users\张洋\AppData\Roaming\npm\node_modules\yo\lib\cli.js
    
    > yo@1.8.5 postinstall C:\Users\张洋\AppData\Roaming\npm\node_modules\yo
    > yodoctor
    
    
    Yeoman Doctor
    Running sanity checks on your system
    
    √ Global configuration file is valid
    √ NODE_PATH matches the npm root
    √ Node.js version
    √ No .bowerrc file in home directory
    √ No .yo-rc.json file in home directory
    **× npm version**

这里图示npm版本问题，我已经升级到最新版本了，
运行yo -v是这样的

    C:\Users\张洋\WebstormProjects\react_gallary\react_gallary [master +12 ~1 -0 !]> yo -v
    ? 'Allo ZhangYang! What would you like to do? (Use arrow keys)
      Run a generator
    > Webapp
      React Webpack
      ──────────────
      Update your generators
      Install a generator
      Find some help
      Get me out of here!
      ──────────────

为什么不显示版本号呢？之前安装nmp工具的时候有时候是全局安装有时候不是，之前查看yo文件夹，发现两个地方都有，我就把两个地方的yo文件夹都删了，然后重新全局安装，还是上面的问题？怎么办 ？大神？