like nave but for windows (powershell) with a partial feature set

1. download the wnave.ps1
2. open a powershell
3. run wnave.ps1

  install <version>       Install node the version passed (ex: 0.6.0)
  uninstall <version>     Delete the install for <version>
  use <version>           enter a subshell where <version> is being used
  ls                      list local installed versions
  ls-remote               remote available versions

  npm-install <version>   Install npm the version passed (ex 1.1.60)
  npm-ls                  list remote available npm versions

<version> can be the string "latest" to get the latest distribution.
<version> can be the string "stable" to get the latest stable version.