问 “nuget”未被识别，但其他nuget命令正在工作

EN

我正在尝试使用 http://docs.nuget.org/docs/creating-packages/creating-and-publishing-a-package#From_a_convention_based_working_directory 作为参考来创建一个nuget包。我在Visual Studio中的包管理器控制台不允许我使用'nuget‘命令。我可以'Get-help nuguet‘，它显示：

包括以下NuGet cmdlet。

    Cmdlet                  Description
    ------------------      ----------------------------------------------
    Get-Package             Gets the set of packages available from the package source.
    Install-Package         Installs a package and its dependencies into the project.
    Uninstall-Package       Uninstalls a package. If other packages depend on this package, 
                            the command will fail unless the –Force option is specified.
    Update-Package          Updates a package and its dependencies to a newer version.
    Add-BindingRedirect     Examines all assemblies within the output path for a project
                            and adds binding redirects to the application (or web) 
                            configuration file where necessary.
    Get-Project             Returns a reference to the DTE (Development Tools Environment) 
                            for the specified project. If none is specifed, returns the