You can clone with
HTTPS or Subversion.
I installed node v0.8.2 on windows with the .msi installer.
Then I ran npm install -g vows, and it installed vows.
npm install -g vows
Now, if I want to run vows, it tells me, there is no such command! Do I really have to add AppData\Roaming\npm to my PATH?
Yes, or you have to have npm install to a prefix that IS in your Path. (The MSI node installer will set this up for you correctly by default, though you may need to restart your cmd instance.)