Squashed 'vendor/nvm/' changes from 788d877..49e9a30

49e9a30 Merge pull request #305 from marioidival/patch-1
6e1c249 For zsh users

git-subtree-dir: vendor/nvm
git-subtree-split: 49e9a309c37b627b2746b85397cecb954585cc9f
Merge commit '0ddc4c5aff98c5e14c895bf3168aa372332c0d9d'