title: ng not recognized in powershell
body: <p>ng : The term 'ng' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
  spelling of the name, or if a path was included, verify that the path is correct and try again.
  At line:1 char:1
  + ng new abc
  + ~~
      + CategoryInfo          : ObjectNotFound: (ng:String) [], CommandNotFoundException
      + FullyQualifiedErrorId : CommandNotFoundException</p>