Squashed 'vim/bundle/nerdtree/' content from commit b0bb781

git-subtree-dir: vim/bundle/nerdtree
git-subtree-split: b0bb781fc73ef40365e4c996a16f04368d64fc9d
Merge commit '3529989ad64a24eb3512d20019060a4f0a91aecf' as 'vim/bundle/nerdtree'