yeoman错误提示

运行 yo angular 出现如下提示：

$ yo angular

    grunt-cli: The grunt command line interface. (v0.1.9)

    Fatal error: Unable to find local grunt.

    If you're seeing this message, either a Gruntfile wasn't found or grunt
    hasn't been installed locally to your project. For more information about
    installing and configuring grunt, please see the Getting Started guide:

    http://gruntjs.com/getting-started

　　我们可以看到其中有在本地没有找到 grunt ，因此我们需要先在本地安装 grunt。

$ sudo npm install grunt --save-dev

　　运行以上命令，再去执行 yo angular 命令，就不会出现如上提示了。