npm : The term 'npm' 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+ npm install discord.js+ ~~~ + CategoryInfo : ObjectNotFound: (npm:String) [], CommandNotFoun dException + FullyQualifiedErrorId : CommandNotFoundException